CN-122003055-A - Display device and electronic device including the same

Abstract

The present invention relates to a display device and an electronic device including the display device. A display device is provided, which includes a first substrate, a second substrate, a sealing layer, and a plurality of spacers supporting a gap between the first substrate and the second substrate. The first substrate includes a first support substrate and an element layer including a plurality of light emitting elements disposed in a plurality of emission regions. The second substrate includes a second support substrate and a color conversion layer. The color conversion layer includes a plurality of main conversion portions overlapping the plurality of emission regions, respectively, and having a first thickness, a plurality of dummy conversion portions arranged side by side with each other in a partial region of the non-display region that is in contact with the display region, and a partition wall disposed between the plurality of main conversion portions and the plurality of dummy conversion portions. Each of at least some of the plurality of dummy conversion portions has a second thickness that is greater than the first thickness.

Inventors

• Zheng Yinmo
• LI DAYU
• Quan Yuzhi

Assignees

• 三星显示有限公司

Dates

Publication Date

20260508

Application Date

20251030

Priority Date

20241105

Claims (20)

1. 1. A display device, comprising: A first substrate and a second substrate facing each other; A sealing layer bonding the first and second substrates, and A plurality of spacers supporting a gap between the first substrate and the second substrate, Wherein the first substrate includes: A first support substrate including a display region including a plurality of emission regions arranged side by side with each other and a non-display region surrounding the display region, and An element layer including a plurality of light emitting elements disposed on the first support substrate in the plurality of emission regions, and The second substrate includes: a second support substrate including the display region and the non-display region, and A color conversion layer disposed on a surface of the second support substrate facing the first support substrate, Wherein the color conversion layer includes: a plurality of main converting portions overlapping the plurality of emission regions and having a first thickness, respectively; A plurality of dummy conversion portions arranged side by side with each other in a partial region of the non-display region in contact with the display region, and A partition wall provided between the plurality of main conversion portions and the plurality of dummy conversion portions, Wherein each of at least some of the plurality of dummy conversion portions has a second thickness that is greater than the first thickness.
2. 2. The display device according to claim 1, wherein: the element layer further includes: A power auxiliary line disposed in the non-display region and overlapping the plurality of dummy conversion portions; a plurality of through holes formed in the power auxiliary line and arranged side by side with each other, and A plurality of hole cover portions covering the plurality of through holes and spaced apart from each other, The plurality of spacers overlap the partition wall, and At least one spacer overlapping the partition wall between the plurality of dummy conversion portions among the plurality of spacers overlaps at least one of the plurality of hole cover portions.
3. 3. The display device according to claim 2, wherein: The first substrate further includes: A circuit layer disposed on the first support substrate, and An encapsulation layer covering the element layer, Wherein the element layer is disposed on the circuit layer, The element layer further includes: a plurality of first light emitting electrodes disposed on the circuit layer in the plurality of emission regions; A pixel defining layer disposed on the circuit layer, overlapping the non-emission regions between the plurality of emission regions, and covering edges of each of the plurality of first light emitting electrodes; a light emitting layer disposed on the first light emitting electrodes, and A second light emitting electrode disposed on the light emitting layer, Each of the plurality of light emitting elements has a structure in which the light emitting layer is sandwiched between the corresponding first light emitting electrode and the second light emitting electrode, The power auxiliary line and the first light-emitting electrodes are arranged in the same layer, and The plurality of hole cover portions are disposed in the same layer as the pixel defining layer.
4. 4. A display device according to claim 3, wherein the encapsulation layer comprises: A first encapsulation layer disposed on the second light emitting electrode and including an inorganic insulating material; A second encapsulation layer disposed on the first encapsulation layer and overlapping the display region and including an organic insulating material, and A third encapsulation layer covering the second encapsulation layer and including the inorganic insulating material, Wherein the plurality of spacers are in contact with the third encapsulation layer.
5. 5. A display device according to claim 3, wherein the circuit layer comprises: a plurality of light emitting pixel drivers electrically connected to the plurality of first light emitting electrodes, respectively, and A power line disposed in the non-display area, Wherein the power supply line is electrically connected to the second light emitting electrode and the power supply auxiliary line.
6. 6. The display device according to claim 2, wherein: one or more dummy conversion portions among the plurality of dummy conversion portions are adjacent to a corner of the second substrate and have the second thickness, and One or more remaining dummy conversion portions of the plurality of dummy conversion portions have the first thickness.
7. 7. The display device according to claim 2, wherein the plurality of dummy conversion portions have the second thickness.
8. 8. The display device according to claim 2, wherein a difference between the first thickness and the second thickness is 0.5 μm or more.
9. 9. The display device according to claim 2, wherein: the plurality of emission areas includes: a first emission region that emits light of a first wavelength band; A second emission region for emitting light of a second wavelength band lower than the first wavelength band, and A third emission region that emits light of a third wavelength band lower than the second wavelength band, The plurality of light emitting elements emit light of a fourth wavelength band equal to or lower than the third wavelength band, and The plurality of main converting sections includes: A first color conversion section overlapping the first emission region and converting light of the fourth wavelength band into light of the first wavelength band; A second color conversion section overlapping the second emission region and converting the light of the fourth wavelength band into light of the second wavelength band, and And a light transmitting portion overlapping the third emission region and transmitting light of the fourth wavelength band.
10. 10. The display device according to claim 9, wherein: of the at least some dummy conversion portions, a width of a first dummy conversion portion that replaces the first color conversion portion is equal to a width of the first color conversion portion, The width of the second dummy conversion portion, which replaces the second color conversion portion, among the at least some dummy conversion portions is equal to the width of the second color conversion portion, and Among the at least some dummy conversion portions, a width of a third dummy conversion portion that replaces the light-transmitting portion is equal to a width of the light-transmitting portion.
11. 11. The display device according to claim 9, wherein: of the at least some dummy conversion portions, a width of a first dummy conversion portion that replaces the first color conversion portion is smaller than a width of the first color conversion portion, The width of the second dummy conversion portion, which replaces the second color conversion portion, is smaller than the width of the second color conversion portion among the at least some dummy conversion portions, and Among the at least some dummy conversion portions, a width of a third dummy conversion portion that replaces the light-transmitting portion is smaller than a width of the light-transmitting portion.
12. 12. The display device according to claim 9, wherein: The second substrate further includes: A color filter layer disposed on the surface of the second support substrate, and A filter capping layer covering the color filter layer, The color conversion layer is disposed on the filter cover layer, and The color filter layer includes: a first filter portion overlapping the first emission region and transmitting light of the first wavelength band; a second filter portion overlapping the second emission region and transmitting light of the second wavelength band; a third filter portion overlapping the third emission region and transmitting light of the third wavelength band, and And a light shielding portion disposed between the first filter portion, the second filter portion, and the third filter portion.
13. 13. An electronic device, comprising: A display device for displaying the image, Wherein the display device includes: A first substrate and a second substrate facing each other; A sealing layer bonding the first and second substrates, and A plurality of spacers supporting a gap between the first substrate and the second substrate, Wherein the first substrate includes: A first support substrate including a display region including a plurality of emission regions arranged side by side with each other and a non-display region surrounding the display region; a circuit layer disposed on the first support substrate; an element layer including a plurality of light emitting elements disposed on the circuit layer in the plurality of emission regions, and An encapsulation layer covering the element layer, The second substrate includes: A second support substrate including the display region and the non-display region; A color filter layer disposed on a surface of the second support substrate facing the first support substrate; A filter capping layer covering the color filter layer; A color conversion layer disposed on the filter cover layer, and A color conversion coating layer covering the color conversion layer, Wherein the color conversion layer includes: a plurality of main converting portions overlapping the plurality of emission regions and having a first thickness, respectively; A plurality of dummy conversion portions arranged side by side with each other in a partial region of the non-display region in contact with the display region, and A partition wall provided between the plurality of main conversion portions and the plurality of dummy conversion portions, Wherein each of at least some of the plurality of dummy conversion portions has a second thickness that is greater than the first thickness.
14. 14. The electronic device of claim 13, wherein: the element layer further includes: a plurality of first light emitting electrodes disposed on the circuit layer in the plurality of emission regions; A pixel defining layer disposed on the circuit layer, overlapping the non-emission regions between the plurality of emission regions, and covering edges of each of the plurality of first light emitting electrodes; a light emitting layer disposed on the plurality of first light emitting electrodes; a second light emitting electrode disposed on the light emitting layer; A power auxiliary line disposed on the circuit layer in the non-display region and overlapping the plurality of dummy conversion portions; a plurality of through holes formed in the power auxiliary line and arranged side by side with each other, and A plurality of hole cover portions disposed in the same layer as the pixel defining layer, covering the plurality of through holes, and spaced apart from each other, Each of the plurality of light emitting elements has a structure in which the light emitting layer is sandwiched between the corresponding first light emitting electrode and the second light emitting electrode, The plurality of spacers overlap the partition wall, and At least one spacer overlapping the partition wall between the plurality of dummy conversion portions among the plurality of spacers overlaps at least one of the plurality of hole cover portions.
15. 15. The electronic device of claim 14, wherein the encapsulation layer comprises: A first encapsulation layer disposed on the second light emitting electrode and including an inorganic insulating material; A second encapsulation layer disposed on the first encapsulation layer and overlapping the display region and including an organic insulating material, and A third encapsulation layer covering the second encapsulation layer and including the inorganic insulating material, Wherein the plurality of spacers are in contact with the third encapsulation layer.
16. 16. The electronic device of claim 13, wherein: one or more dummy conversion portions among the plurality of dummy conversion portions are adjacent to a corner of the second substrate and have the second thickness, and One or more remaining dummy conversion portions of the plurality of dummy conversion portions have the first thickness.
17. 17. The electronic device of claim 13, wherein the plurality of dummy conversion portions have the second thickness.
18. 18. The electronic device of claim 13, wherein: the plurality of emission areas includes: a first emission region that emits light of a first wavelength band; A second emission region for emitting light of a second wavelength band lower than the first wavelength band, and A third emission region that emits light of a third wavelength band lower than the second wavelength band, The plurality of light emitting elements emit light of a fourth wavelength band equal to or lower than the third wavelength band, and The plurality of main converting sections includes: A first color conversion section overlapping the first emission region and converting light of the fourth wavelength band into light of the first wavelength band; A second color conversion section overlapping the second emission region and converting the light of the fourth wavelength band into light of the second wavelength band, and And a light transmitting portion overlapping the third emission region and transmitting light of the fourth wavelength band.
19. 19. The electronic device of claim 18, wherein: of the at least some dummy conversion portions, a width of a first dummy conversion portion that replaces the first color conversion portion is equal to a width of the first color conversion portion, The width of the second dummy conversion portion, which replaces the second color conversion portion, among the at least some dummy conversion portions is equal to the width of the second color conversion portion, and Among the at least some dummy conversion portions, a width of a third dummy conversion portion that replaces the light-transmitting portion is equal to a width of the light-transmitting portion.
20. 20. The electronic device of claim 18, wherein: of the at least some dummy conversion portions, a width of a first dummy conversion portion that replaces the first color conversion portion is smaller than a width of the first color conversion portion, The width of the second dummy conversion portion, which replaces the second color conversion portion, is smaller than the width of the second color conversion portion among the at least some dummy conversion portions, and Among the at least some dummy conversion portions, a width of a third dummy conversion portion that replaces the light-transmitting portion is smaller than a width of the light-transmitting portion.

Description

Display device and electronic device including the same Technical Field The present disclosure relates to a display device and an electronic device including the display device. Background With the development of information society, the demand for display devices capable of displaying images in various ways is increasing. For example, display devices are used for various electronic devices such as smart phones, digital cameras, laptop computers, navigation devices, and smart phones. The display device may be a flat panel display device such as a liquid crystal display device, a field emission display device, and a light emitting display device, for example. Examples of the light emitting display device may include an organic light emitting display device including an organic light emitting element, an inorganic light emitting display device including an inorganic light emitting element such as an inorganic semiconductor, and a micro light emitting display device including a micro light emitting element. The organic light emitting display device displays an image using light emitting elements each including a light emitting layer formed of an organic light emitting material. As described herein, the organic light emitting display device realizes image display using self-light emitting elements, and thus, may have relatively superior performance in terms of power consumption, response speed, light emitting efficiency, luminance, and wide viewing angle, as compared to other display devices. In some display devices, a display surface from which light is emitted may include a display region in which an image is displayed and a non-display region around the display region. An emission region emitting light having a corresponding brightness and color may be disposed in the display region. Disclosure of Invention The display device may include first and second substrates facing each other, and a sealing layer bonding the first and second substrates. The first substrate may include light emitting elements provided in an emission region (the emission region is arranged in a display region), and may emit light from the emission region at respective brightness. The second substrate may selectively emit light from the emission region emitted from the first substrate to the outside. The display device may further include a spacer supporting a gap between the first substrate and the second substrate. The spacers may be arranged to be spaced apart from each other in the display region and the non-display region. In order to improve reliability of adhesion between each of the first and second substrates and the sealing layer, physical pressure for bonding the first and second substrates may be relatively strongly applied to the non-display region overlapping or adjacent to the sealing layer. As a result, the pressing defect of the spacer disposed in the non-display region may be easily induced. In some cases, the pressing defect of the spacer may easily cause defects such as cracks or breakage of the inorganic insulating material of the encapsulation layer, for example, and the cracked or broken inorganic insulating material may be a permeation path of oxygen or moisture. Accordingly, the display quality and lifetime of the display device may be degraded. In view of the foregoing, aspects of the present disclosure provide a display device and an electronic device capable of improving display quality and lifetime of the display device and the electronic device including the display device by reducing a pressing defect of a spacer due to physical pressure applied when bonding a first substrate and a second substrate. However, aspects of the present disclosure are not limited to the aspects set forth herein. The above and other aspects of the present disclosure will become more apparent to those of ordinary skill in the art to which the present disclosure pertains by referencing the detailed description of the present disclosure given below. According to aspects of the present disclosure, a display device includes a first substrate and a second substrate facing each other, a sealing layer bonding the first substrate and the second substrate, and a plurality of spacers supporting a gap between the first substrate and the second substrate. The first substrate includes a first support substrate including a display region including a plurality of emission regions arranged side by side with each other and a non-display region surrounding the display region, and an element layer including a plurality of light emitting elements disposed on the first support substrate in the plurality of emission regions. The second substrate includes a second support substrate including a display region and a non-display region, and a color conversion layer disposed on a surface of the second support substrate facing the first support substrate. The color conversion layer includes a plurality of main conversion portions overlapping the plurality of