CN-122002999-A - Display device

Abstract

A display apparatus according to an embodiment of the present disclosure may include a substrate, a plurality of light emitting devices disposed on the substrate and positioned in a display area, a plurality of column lines electrically connected to a first electrode of each of the plurality of light emitting devices, a plurality of row lines electrically connected to a second electrode of each of the plurality of light emitting devices, an optical driving device disposed on the substrate and positioned in the display area, overlapping the first one of the plurality of row lines, and emitting a specific light of a first wavelength band according to a voltage difference between both ends, and an optical detecting device disposed on the substrate and detecting the specific light reflected from the outside and incident inside.

Inventors

• Kong Nanrong
• Jin Chengche
• Jin Xunpei
• Jin Shanye
• JIANG CHENGZHEN
• JIN ZHONGCHENG

Assignees

• 乐金显示有限公司

Dates

Publication Date

20260508

Application Date

20250623

Priority Date

20241101

Claims (20)

1. 1. A display device, the display device comprising: a substrate; a plurality of light emitting devices disposed on the substrate and positioned in a display area; A plurality of column lines electrically connected to the first electrode of each of the plurality of light emitting devices; a plurality of row lines electrically connected to the second electrode of each of the plurality of light emitting devices; An optical driving device disposed on the substrate, the optical driving device being positioned in the display area, the optical driving device overlapping a first row line among the plurality of row lines and configured to emit a specific light of a first wavelength band according to a voltage difference between both ends, and An optical detection device provided on the substrate, the optical detection device configured to detect specific light reflected from the outside and incident to the inside.
2. 2. The display device of claim 1, further comprising a plurality of drivers electrically connected to the plurality of column lines and the plurality of row lines, Wherein the display area includes a plurality of cells, and each of the plurality of cells includes a plurality of sub-cells corresponding to the plurality of drivers, Wherein the plurality of units includes a first unit and a second unit, Wherein at least one of the plurality of first sub-units included in the first unit includes the optical driving means, and at least one of the plurality of second sub-units included in the second unit includes the optical detecting means.
3. 3. The display device of claim 1, further comprising a plurality of drivers electrically connected to the plurality of column lines and the plurality of row lines, Wherein the display area includes a plurality of cells, and each of the plurality of cells includes a plurality of sub-cells corresponding to the plurality of drivers, Wherein the plurality of subunits comprises a first subunit and a second subunit, Wherein the first subunit comprises the optical drive means and the second subunit comprises the optical detection means.
4. 4. The display device of claim 1, further comprising a plurality of drivers electrically connected to the plurality of column lines and the plurality of row lines, Wherein the plurality of drivers includes a first driver electrically connected to the first row line, Wherein the first driver is configured to generate a voltage difference between an anode electrode and a cathode electrode of the optical drive apparatus.
5. 5. The display apparatus of claim 4, wherein the first row line is electrically connected to a second electrode of each of two or more first light emitting devices among the plurality of light emitting devices, and the first row line is electrically connected to the cathode electrode of the optical driving device.
6. 6. The display device according to claim 4, further comprising an optical drive control transistor configured to control connection between a high potential voltage node to which a high potential voltage is applied and the anode electrode of the optical drive device.
7. 7. The display device according to claim 6, wherein the optical drive control transistor is included in one of the plurality of drivers.
8. 8. The display device according to claim 6, wherein the optical drive control transistor is configured to be turned on or off according to a drive enable control signal, and Wherein the driving enable control signal corresponds to a light emission control signal that controls light emission timing of at least one of the plurality of light emitting devices.
9. 9. The display device of claim 1, wherein the optical detection means comprises an anode electrode and a cathode electrode, Wherein the optical detection means is configured to conduct a forward current from the anode electrode to the cathode electrode in dependence of a specific light incident into the interior of the display device, Wherein the anode electrode of the optical detection device is electrically connected to a high potential voltage node to which a high potential voltage is applied, Wherein, the display device further includes: An optical detection control transistor configured to control connection between the high potential voltage node and a low potential voltage node to which a low potential voltage is applied according to a voltage of the cathode electrode of the optical detection device, and A sense transistor configured to control a connection between the anode electrode of the optical detection device and a sense node.
10. 10. The display device of claim 9, further comprising a plurality of drivers electrically connected to the plurality of column lines and the plurality of row lines, Wherein the optical detection control transistor and the sensing transistor are included in one of the plurality of drivers.
11. 11. The display device according to claim 10, wherein the sense transistor is configured to be turned on or off according to a sense enable control signal, and Wherein the sense enable control signal is the same as a scan signal used in one of the plurality of drivers.
12. 12. The display device of claim 9, wherein the low potential voltage node is electrically connected to a second row line of the plurality of row lines.
13. 13. The display device according to claim 1, further comprising: a plurality of drivers electrically connected to the plurality of column lines and the plurality of row lines; a side protection layer provided on a side of each of the plurality of drivers provided on the substrate; an upper protective layer disposed on the side protective layer and the plurality of drivers; the insulating layer is arranged on the upper protective layer; a bank portion provided on the insulating layer, the plurality of light emitting devices, the optical driving apparatus, and the optical detecting apparatus being provided on the bank portion, and And a first optical layer disposed on a side of the plurality of light emitting devices.
14. 14. The display device of claim 13, wherein the optical driving means is a vertical diode, Wherein the optical driving device is mounted on the bank, Wherein the optical driving means is positioned on a side of two or more first light emitting devices overlapping the first row line, Wherein the first row line is arranged on the optical drive device, the first row line is electrically connected to a cathode electrode of the optical drive device, Wherein the display device further includes an anode connection pattern extending from an upper surface of the insulating layer to an upper surface of the bank along a side of the bank, the anode connection pattern being electrically connected to an anode electrode of the optical driving device.
15. 15. The display device of claim 13, wherein the optical driving means is a vertical diode, Wherein the optical driving device is mounted on the bank, Wherein the optical driving means is positioned on a side of the two or more second light emitting devices overlapping a second row line different from the first row line among the plurality of row lines, Wherein, the display device further includes: an anode connection pattern electrically connected to an anode electrode of the optical detection device, and And a cathode connection pattern extending from an upper surface of the insulating layer to an upper surface of the bank along a side of the bank, the cathode connection pattern being electrically connected to a cathode electrode of the optical detection device.
16. 16. The display apparatus of claim 13, wherein each of the two or more first light emitting devices is a vertical light emitting diode, Wherein the plurality of column lines includes a plurality of first column lines electrically connected to a first electrode of each of two or more first light emitting devices overlapping the first row line, Wherein each of the plurality of first column lines is arranged on the insulating layer and extends to an upper surface of the bank along a side surface of the bank, Wherein the first row line is arranged on the first optical layer and the two or more first light emitting devices.
17. 17. The display device according to claim 13, further comprising: a second optical layer surrounding the first optical layer; A third optical layer disposed on the plurality of row lines; A black matrix disposed on the third optical layer, the black matrix having openings overlapping the plurality of light emitting devices, and An overcoat layer disposed on the black matrix, the overcoat layer overlapping the optical driving device and the optical detecting device, and the overcoat layer including a transparent insulating material.
18. 18. The display apparatus according to claim 1, wherein the first wavelength band is a wavelength band different from a wavelength band of light emitted from the plurality of light emitting devices.
19. 19. The display device of claim 1, wherein the first wavelength band is an infrared wavelength band.
20. 20. The display device according to claim 1, wherein the frame period includes an optical driving period in which the optical driving device emits the specific light, and an optical sensing period in which the optical detecting device detects the specific light reflected from the outside of the display device and incident into the inside of the display device, Wherein at least one of the plurality of light emitting devices emits light during the optical driving period.

Description

Display device Technical Field Embodiments of the present disclosure relate to an apparatus, and in particular, for example, but not limited to, a display apparatus. Background Display devices are applied to various electronic devices such as televisions, mobile phones, laptop computers, and tablet computers. The display apparatus may include an Organic Light Emitting Display (OLED) including a self light emitting device and a Liquid Crystal Display (LCD) including a separate light source. Recently, a display device having a Light Emitting Diode (LED) has been attracting attention as a next-generation display device. Since the light emitting diode is made of an inorganic material instead of an organic material, the display device having the light emitting diode has a characteristic of faster light emitting speed, excellent light emitting efficiency, and can display a high brightness image as compared with a liquid crystal display or an organic light emitting display. Disclosure of Invention Embodiments of the present disclosure may provide a display device that integrates an optical touch sensor into a display panel. Embodiments of the present disclosure may provide a display apparatus including an optical driving apparatus and an optical detecting apparatus having a structure corresponding to a light emitting device for a display as an optical touch sensor. Embodiments of the present disclosure may provide a display device capable of reducing noise caused by light emission for image display during optical touch sensing. Embodiments of the present disclosure may provide a display device capable of embedding drivers for display driving and touch driving into a display panel, thereby reducing the number of driving components (e.g., drivers) connected to the outside of the display panel, thereby reducing the number of assembly processes in a manufacturing process to achieve process optimization. The objects of the embodiments of the present disclosure are not limited to the objects described in the present disclosure, and other objects not mentioned will be clearly understood by those skilled in the art from the following description. A display apparatus according to an embodiment of the present disclosure may include a substrate, a plurality of light emitting devices disposed on the substrate and positioned in a display area, a plurality of column lines electrically connected to a first electrode of each of the plurality of light emitting devices, a plurality of row lines electrically connected to a second electrode of each of the plurality of light emitting devices, an optical driving device disposed on the substrate and positioned in the display area, overlapping the first row line among the plurality of row lines, and emitting a specific light of a first wavelength band according to a voltage difference between both ends, and an optical detecting device disposed on the substrate and detecting the specific light reflected from the outside and incident inside. A display apparatus according to an embodiment of the present disclosure may include a substrate, a plurality of light emitting devices disposed on the substrate and positioned in a display area, a plurality of drivers configured to drive the plurality of light emitting devices, an optical driving device disposed on the substrate and positioned in the display area to emit a specific light of a first wavelength band, and an optical detecting device disposed on the substrate and positioned in the display area to detect the specific light reflected from the outside and incident to the inside. The optical drive device may be driven by a first driver among the plurality of drivers, and the optical detection device may be driven by a second driver among the plurality of drivers. According to embodiments of the present disclosure, a display device integrating an optical touch sensor into a display panel may be provided. According to an embodiment of the present disclosure, there may be provided a display apparatus including an optical driving apparatus and an optical detecting apparatus having a structure corresponding to a light emitting device for a display as an optical touch sensor. Accordingly, the display panel can be more easily designed and produced and process optimization can be achieved. According to the embodiments of the present disclosure, a display device capable of reducing noise caused by light emission of an image display during optical touch sensing may be provided. According to an embodiment of the present disclosure, a display device capable of embedding drivers for display driving and touch driving into a display panel, thereby reducing the number of driving components (e.g., drivers) connected to the outside of the display panel, thereby reducing the number of assembly processes in a manufacturing process to achieve process optimization may be provided. The effects of the embodiments of the present disclosure are not limited to the abov