CN-121995665-A - Display device

Abstract

The display device comprises a display substrate, a protective cover plate, a backlight module and a display module, wherein the display substrate is provided with a display area and a peripheral area positioned at the periphery of the display area, a first shading layer and a plurality of light sensing devices are arranged in the display substrate, the protective cover plate is arranged on the light emitting side of the display substrate and comprises a first visible area and a first non-visible area positioned at the periphery of the first visible area, a second shading layer is arranged on the first non-visible area, the backlight module is arranged on the non-light emitting side of the display substrate and comprises a second visible area and a second non-visible area positioned at the periphery of the second visible area, a third shading layer used for shading backlight rays emitted to the display substrate is arranged on the second non-visible area, and the orthographic projection of at least two of the first shading layer, the second shading layer and the third shading layer on the display substrate is overlapped with the orthographic projection part of at least one light sensing device on the display substrate. The display device provided by the disclosure can improve the detection accuracy of the ambient light intensity.

Inventors

• ZHU JIANGUO
• LIU FANGYI
• YIN XIAOFENG

Assignees

• 北京京东方显示技术有限公司
• 京东方科技集团股份有限公司

Dates

Publication Date

20260508

Application Date

20241101

Claims (20)

1. 1.A display device, comprising: the display device comprises a display substrate, a first light shielding layer and a plurality of light sensing devices, wherein the display substrate is provided with a display area and a peripheral area positioned at the periphery of the display area; The protective cover plate is arranged on the light emitting side of the display substrate and comprises a first visible area and a first invisible area positioned at the periphery of the first visible area, a second shading layer is arranged on the first invisible area, and The backlight module is arranged on the non-light-emitting side of the display substrate, comprises a second visible area and a second non-visible area positioned at the periphery of the second visible area, a third shading layer for shading the backlight light to emit towards the display substrate is arranged in the second non-visible area, The orthographic projection of at least two of the first light shielding layer, the second light shielding layer and the third light shielding layer on the display substrate is overlapped with the orthographic projection of at least one light sensing device on the display substrate.
2. 2. The display device according to claim 1, wherein the display substrate comprises a color film layer including a plurality of filter units for filtering light of different colors, and a black matrix layer located at a periphery of the filter units, and wherein the first light shielding layer comprises the black matrix layer.
3. 3. The display device according to claim 1, wherein the second light-shielding layer includes: and at least one ink layer arranged in the first invisible area.
4. 4. The display device according to claim 1, wherein the third light shielding layer comprises a light shielding adhesive disposed in the backlight module.
5. 5. The display device according to claim 1, wherein the first light shielding layer, the second light shielding layer and a orthographic projection portion of at least one of the light sensing devices on the display substrate overlap, the first light shielding layer and the second light shielding layer being for shielding external ambient light from irradiating at least one of the light sensing devices.
6. 6. The display device according to claim 1, wherein the plurality of light sensing devices comprises a first light sensing device group for receiving external environment light and a second light sensing device group for not receiving external environment light, the first light sensing device group and the second light sensing device group respectively comprise at least one light sensing device, wherein at least one of the first light shielding layer and the second light shielding layer is provided with a light transmission area and a light shielding area, a light filtering layer is arranged in the light transmission area, and the light filtering layer at least partially overlaps with the orthographic projection of the first light sensing device group on the display substrate, and the light shielding area at least partially overlaps with the orthographic projection of the second light sensing device group on the display substrate.
7. 7. The display apparatus according to claim 6, wherein the first light sensing device group includes a first light sensing device, a second light sensing device, and a third light sensing device for detecting different colors of light in the external environment light, respectively.
8. 8. The display device according to claim 6, wherein in a direction perpendicular to the display substrate, the first light-sensing device group and the second light-sensing device group are located in an overlapping region of the peripheral region and the first non-visible region, the light-transmitting region and the light-shielding region are disposed on the first light-shielding layer and the second light-shielding layer, and the front projection of the first light-sensing device group and the light-transmitting region on the first light-shielding layer and the second light-shielding layer on the display substrate at least partially overlaps, and the front projection of the second light-sensing device group and the light-shielding region on the first light-shielding layer and the second light-shielding layer at least partially overlaps.
9. 9. The display device according to claim 6, wherein a plurality of first light-transmitting regions are provided in the first light-shielding layer, a plurality of second light-transmitting regions are provided in the second light-shielding layer, orthographic projections of the first light-transmitting regions and the second light-transmitting regions on the display substrate are at least partially overlapped, the overlapped first light-transmitting regions and second light-transmitting regions are formed into a light-transmitting unit, wherein one light-transmitting unit is provided corresponding to one light-sensing device in the first light-sensing device group, and the light-filtering layer is provided in at least one of the first light-transmitting regions and the second light-transmitting regions.
10. 10. The display device of claim 9, wherein in a second direction from the display region toward the peripheral region and a first direction perpendicular to the second direction, centers of the first light-transmitting region, the second light-transmitting region, and the corresponding effective photosensitive region of the photosensitive device coincide, and forward projection areas of the second light-transmitting region, the first light-transmitting region, and the display substrate are each larger than a forward projection area of the effective photosensitive region of the photosensitive device, and the second light-transmitting region is larger than a forward projection area of the first light-transmitting region on the display substrate.
11. 11. The display device of claim 10, wherein the dimension of the orthographic projection of the second light-transmitting region on either side of the display substrate is greater than or equal to 0.361mm relative to the orthographic projection of the effective photosensitive region of the photosensitive device on the display substrate.
12. 12. The display device according to claim 9, wherein the first light-transmitting region is configured to transmit white light, and the second light-transmitting region is provided with a first filter layer therein.
13. 13. The display device according to claim 12, wherein when the second light shielding layer is an ink layer, the second light shielding layer is provided with the second light transmitting region, the second light transmitting region is a hollowed-out opening, and the first filter layer includes a color ink layer disposed in the hollowed-out opening.
14. 14. The display device according to claim 13, wherein the light-sensing devices are sequentially arranged at intervals along a first direction, the second light-transmitting areas are correspondingly arranged at intervals with the light-sensing devices, the first direction is an extending direction of a first side edge of the display substrate, the size of the second light-transmitting areas along the first direction is greater than or equal to 0.3mm, and a distance between two adjacent second light-transmitting areas in the first direction is 0.3-0.5 mm.
15. 15. The display device of claim 14, wherein the orthographic projection shape of the second light-transmitting region on the display substrate is a rounded polygon, wherein corners formed by two adjacent sides of the rounded polygon are rounded corners, and the rounded corners have a chamfer radius of greater than or equal to 0.2mm.
16. 16. The display device according to claim 13, wherein a light shielding region in the second light shielding layer at least partially overlaps with an orthographic projection of the first filter layer on the display substrate, and a size of an overlapping region of the first filter layer and the light shielding region of the second light shielding layer in a direction parallel to the display substrate is greater than or equal to 0.3mm at least one side edge of the second light transmitting region.
17. 17. The display device according to claim 13, wherein a distance between the display region and the first filter layer in a second direction from the display region toward the peripheral region is greater than or equal to 0.273mm.
18. 18. The display device according to claim 12, wherein the plurality of light sensing devices are sequentially arranged at intervals along a first direction, the plurality of second light transmitting regions are arranged at intervals corresponding to the plurality of light sensing devices, the first direction is an extending direction of a first side edge of the display substrate, and a distance between the first filter layer corresponding to one of two adjacent light sensing devices and the effective photosensitive region of the other one of the two adjacent light sensing devices in the first direction is greater than or equal to 0.361mm.
19. 19. The display device according to claim 12, wherein the plurality of light-sensing devices are sequentially arranged at intervals along a first direction, the first direction being an extending direction of a first side of the display substrate, and wherein a distance between two adjacent light-sensing devices in the first direction is greater than or equal to 1.022mm.
20. 20. The display device according to claim 9, wherein a second filter layer is provided in the first light-transmitting region, the second light-transmitting region being configured to be transparent to white light.

Description

Display device Technical Field The disclosure relates to the field of display technologies, and in particular, to a display device. Background With the continuous development of display technology, the requirements on the display screen are increasing. The light sensing device is called a photometric sensor or a light sensor. The light sensing device can be arranged in the display panel and used for sensing the intensity of ambient light to adjust the brightness of the screen, so that the acceptable brightness of human eyes is achieved, and the aim of energy conservation is fulfilled. However, in the related art, the light sensing device in the display panel has a problem in that the ambient light detection accuracy is not high. Disclosure of Invention The embodiment of the disclosure provides a display device, which can improve the detection accuracy of a light sensing device in a display screen to ambient light. The technical scheme provided by the embodiment of the disclosure is as follows: In an embodiment of the present disclosure, there is provided a display device including: the display device comprises a display substrate, a first light shielding layer and a plurality of light sensing devices, wherein the display substrate is provided with a display area and a peripheral area positioned at the periphery of the display area; The protective cover plate is arranged on the light emitting side of the display substrate and comprises a first visible area and a first invisible area positioned at the periphery of the first visible area, a second shading layer is arranged on the first invisible area, and The backlight module is arranged on the non-light-emitting side of the display substrate, comprises a second visible area and a second non-visible area positioned at the periphery of the second visible area, a third shading layer for shading the backlight light to emit towards the display substrate is arranged in the second non-visible area, The orthographic projection of at least two of the first light shielding layer, the second light shielding layer and the third light shielding layer on the display substrate is overlapped with the orthographic projection of at least one light sensing device on the display substrate. The display substrate comprises a color film layer, wherein the color film layer comprises a plurality of light filtering units used for filtering light with different colors and a black matrix layer positioned on the periphery of the light filtering units, and the first shading layer comprises the black matrix layer. The second light shielding layer comprises at least one ink layer arranged in the first invisible area. The third light shielding layer includes a light shielding adhesive disposed in the backlight module. The first light shielding layer and the second light shielding layer are overlapped with the orthographic projection part of at least one light sensing device on the display substrate, and the first light shielding layer and the second light shielding layer are used for shielding external environment light from irradiating at least one light sensing device. The light sensing devices comprise a first light sensing device group used for receiving external environment light and a second light sensing device group used for not receiving external environment light, wherein the first light sensing device group and the second light sensing device group respectively comprise at least one light sensing device, at least one of the first shading layer and the second shading layer is provided with a light transmission area and a shading area, a light filtering layer is arranged in the light transmission area, the light filtering layer at least partially overlaps with the orthographic projection of the first light sensing device group on the display substrate, and the shading area at least partially overlaps with the orthographic projection of the second light sensing device group on the display substrate. The first light sensing device group includes a first light sensing device, a second light sensing device, and a third light sensing device, where the first light sensing device, the second light sensing device, and the third light sensing device are configured to detect light of different colors in external ambient light, respectively. In an exemplary embodiment, in a direction perpendicular to the display substrate, the first light-sensing device group and the second light-sensing device group are both located in an overlapping area of the peripheral area and the first non-visible area, the first light-shielding layer and the second light-shielding layer are both provided with the light-transmitting area and the light-shielding area, the front projections of the first light-sensing device group and the light-transmitting area on the first light-shielding layer and the second light-shielding layer on the display substrate are at least partially overlapped, and the front projections of th