CN-121985681-A - Display panel and display device

Abstract

The present disclosure discloses a display panel and a display device. The display panel includes a substrate having a first region in which first pixels are disposed and a second region in which second pixels are disposed and a light transmitting region disposed between the second pixels, and a polarizing plate disposed over the light transmitting region and including a light transmitting pattern having a light transmittance higher than that of the remaining regions, wherein the substrate includes a high transmission region having a light transmittance higher than that of the remaining portions in a position corresponding to the second region.

Inventors

• Cui Zhenghun
• Pu Chengzhen
• LIN MEILAN
• Jiang Minhe

Assignees

• 乐金显示有限公司

Dates

Publication Date

20260505

Application Date

20210610

Priority Date

20200630

Claims (20)

1. 1. A display panel, comprising: A substrate; a first region disposed on the substrate and including a first pixel, and A second region disposed on the substrate and including second pixels, and a light-transmitting region disposed between the second pixels, Wherein a planarization layer is provided on the light emitting element layer of the first region and the second region, and Wherein a first thickness from the substrate to the planarization layer in the first region is different from a second thickness from the substrate to the planarization layer in the light-transmitting region of the second region.
2. 2. The display panel of claim 1, further comprising a polarizing plate disposed on the first region and the second region, Wherein the planarization layer is disposed between the light emitting element layer and the polarizing plate.
3. 3. The display panel of claim 1, wherein the planarization layer comprises an organic material and is disposed on the inorganic insulating layer.
4. 4. The display panel according to claim 1, wherein the light emitting element layer includes a first electrode, a light emitting element provided on the first electrode, and a second electrode provided on the light emitting element, Wherein the light emitting elements are separated by bank layers, and Wherein the bank layer includes a first groove provided on the light-transmitting region.
5. 5. The display panel of claim 4, wherein the second electrode is disposed on the bank layer and includes an opening disposed on the first groove.
6. 6. The display panel of claim 4, wherein the planarization layer is disposed on the first groove of the bank layer.
7. 7. The display panel according to claim 4, wherein the first thickness is from the substrate to the planarizing layer provided over the light emitting element, and the second thickness is from the substrate to the planarizing layer provided over the first groove of the bank layer.
8. 8. The display panel of claim 4, further comprising a cap layer disposed between the second electrode and the planarization layer, Wherein the cap layer is disposed on the first recess.
9. 9. The display panel of claim 1, further comprising: a buffer layer disposed on the substrate; An active layer disposed on the buffer layer; a gate insulating layer disposed on the active layer; a gate electrode disposed on the gate insulating layer; a first planarization layer disposed on the gate electrode; A second planarization layer disposed on the first planarization layer, and A connection line connected between the active layer and the light emitting element layer through the first planarization layer and the second planarization layer, Wherein the buffer layer, the gate insulating layer, the first planarization layer, and the second planarization layer are disposed on the first region and the second region.
10. 10. The display panel of claim 9, wherein the substrate comprises a first flexible substrate, a second flexible substrate, and an inorganic layer disposed between the first flexible substrate and the second flexible substrate.
11. 11. The display panel of claim 10, wherein the buffer layer includes a second groove corresponding to the light-transmitting region, and the first planarization layer includes a first portion disposed in the second groove.
12. 12. The display panel of claim 11, wherein the substrate includes a third groove corresponding to the second groove, and the first planarization layer further includes a second portion disposed in the third groove.
13. 13. The display panel of claim 12, wherein the third groove is disposed on the second flexible substrate.
14. 14. The display panel of claim 1, further comprising a polarizing plate disposed over the light-transmitting region and comprising a light-transmitting pattern having a higher light transmittance than that of the remaining region of the polarizing plate.
15. 15. The display panel of claim 14, wherein the polarizing plate comprises a first protective layer, a second protective layer, and a polarizer disposed between the first protective layer and the second protective layer, and Wherein the light-transmitting pattern is formed in the polarizer.
16. 16. The display panel of claim 15, wherein the light transmissive pattern comprises an opening formed in the polarizer.
17. 17. The display panel of claim 16, wherein the first protective layer comprises a protrusion inserted into the opening formed in the polarizer.
18. 18. A display device, comprising: A substrate; A buffer layer; a first region disposed on the substrate and including a first pixel, and A second region disposed on the substrate and including second pixels, and a light-transmitting region disposed between the second pixels, Wherein the light emitting element layer includes a first electrode, a light emitting element provided on the first electrode, a second electrode provided on the light emitting element, and a bank layer separating the light emitting elements, Wherein the bank layer comprises a first groove arranged on the light-transmitting area, Wherein the second electrode is disposed on the bank layer and includes an opening disposed on the first groove.
19. 19. The display panel of claim 18, wherein the buffer layer includes a second groove corresponding to the first groove.
20. 20. The display panel of claim 19, wherein the substrate includes a third groove corresponding to the second groove.

Description

Display panel and display device The application is a divisional application of Chinese application patent application with the application number 202110649571.8, the application date 2021, 6, 10 and the name of display panel and display device. Cross Reference to Related Applications The present application claims priority and benefit from korean patent application No. 10-2020-0080180 filed on 30 th 6 th 2020, the entire disclosure of which is incorporated herein by reference. Technical Field The present disclosure relates to a display panel and a display device including the same. Background An image display apparatus that displays various information on a screen is a core technology in the information communication age, and is being developed to be thinner, lighter, and more portable and to have higher performance. In addition, various demands for display devices are increasing, and various types of display devices such as a liquid crystal display device, an organic light emitting display device, a quantum dot display device, and the like are being utilized according to the demands. Further, in order to provide a user with a wider variety of application functions, an input device using a touch sensor or the like and an optical device such as a camera/proximity sensor or the like are installed in the display device. However, since the optical device is coupled to the display device, there is a problem in that the design of the display device becomes difficult. In particular, the camera and the proximity sensor must be exposed to the outside for the incidence and emergence of light, and thus there is a problem in that the display area of the display panel is inevitably reduced. Accordingly, in the related art, the display device has been designed in a design having a large bezel such that the optical device is mounted and exposed, a design in which the display panel is cut into a recess shape, or a design in which the optical device is exposed through a portion of the display panel in the form of a hole. However, since the size of the screen is still limited due to the camera, it is difficult to realize full screen display. Disclosure of Invention In order to realize full-screen display, a method is proposed that prepares an imaging area in which low-resolution pixels are disposed in a screen of a display panel, and places a camera and/or various sensors at positions of the imaging area in terms of under the display panel. However, since the pixels are disposed in the imaging region, there are problems in that light transmittance is reduced and performance of the camera and/or various sensors is reduced. Accordingly, the present disclosure is directed to a structure of a display device capable of transmitting light efficiently toward an optical device. The objects of the present disclosure are not limited to the above objects, and other objects not described herein will be clearly understood by those skilled in the art from the following description. According to an aspect of the present disclosure, a display panel is disclosed. The display panel includes a substrate having a first region in which first pixels are disposed and a second region in which second pixels are disposed and a light transmitting region disposed between the second pixels, and a polarizing plate disposed over the light transmitting region and including a light transmitting pattern having a light transmittance higher than that of the remaining regions, wherein the substrate includes a high transmission region having a light transmittance higher than that of the remaining portions in a position corresponding to the second region. The second region may overlap the camera module, and a resolution of the second pixels disposed in the second region may be lower than a resolution of the first pixels disposed in the first region. The high transmission region may be positioned to correspond to the light transmission pattern. The substrate may include a first substrate, a second substrate, and an inorganic film formed between the first substrate and the second substrate, the first pixel and the second pixel may be disposed on the second substrate, and the high transmission region may include at least one of a first high transmission region disposed in the first substrate and a second high transmission region disposed in the second substrate. The first high transmission region may be a region in which the first substrate is removed and filled with a transparent resin, and the second high transmission region may be a region in which the second substrate is removed and filled with a transparent organic material or a transparent inorganic material. The transparent organic material or the transparent inorganic material may be the same material as the layer included in the first pixel or the second pixel. The second high transmission region may be disposed at a position corresponding to the light transmission region in the second region. Each of the