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CN-116670744-B - Display panel and display device

CN116670744BCN 116670744 BCN116670744 BCN 116670744BCN-116670744-B

Abstract

The disclosure relates to a display panel and a display device, wherein the display panel comprises at least one sensing module arranged in a peripheral area, the sensing module comprises at least one sensing unit, the sensing unit comprises a sensing transistor, a first end of the sensing transistor receives an electric signal, a grid electrode of the sensing transistor receives a first control signal, and a second end of the sensing transistor outputs a photosensitive signal. When the sensing transistor receives the first control signal, the grid electrode of the sensing transistor is set to be in a closed state, when the sensing transistor is illuminated, the voltage output by the drain electrode of the sensing transistor can be increased, the change quantity of the read voltage is used as a photosensitive signal, and the identification of the ambient light is completed according to the response results of different wavelengths and the spectral characteristics of common ambient light. Based on the function, the color temperature of the display can be optimized, and the display effect is improved.

Inventors

  • HUANG RUI

Assignees

  • 京东方科技集团股份有限公司

Dates

Publication Date
20260505
Application Date
20211228

Claims (15)

  1. 1. A display panel comprising a display area and a peripheral area outside the display area, the display panel further comprising: A substrate base; The sensing module is arranged on one side of the substrate base plate and is positioned in the peripheral area, the sensing module comprises a sensing unit, and the sensing unit comprises: A sensing transistor, a first end of which receives an electric signal, a control end of which receives a first control signal, and which is used for receiving ambient light, converting the ambient light into an electric signal and outputting the electric signal from a second end of the sensing transistor; The sensing module comprises a first sensing unit and a second sensing unit, the sensing transistor of the first sensing unit and the sensing transistor of the second sensing unit are top gate type polycrystalline silicon transistors with light transmitting grid electrodes, a filter layer is arranged on one side, deviating from the substrate, of the first sensing unit, the channel region of the sensing transistor of the first sensing unit is located in the orthographic projection of the substrate, of the filter layer, and the filter layer is used for transmitting monochromatic light.
  2. 2. The display panel of claim 1, wherein the sensing unit further comprises: The first end of the storage capacitor is connected with the second end of the sensing transistor, the second end of the storage capacitor is grounded, and the storage capacitor stores a photosensitive signal output by the second end of the sensing transistor; And the control end of the switching transistor receives a second control signal to acquire a photosensitive signal stored by the storage capacitor.
  3. 3. The display panel according to claim 2, wherein the sensing module includes a plurality of sensing units, first ends of sensing transistors of the plurality of sensing units each receive an electrical signal, control ends of the sensing transistors of the plurality of sensing units sequentially receive a first control signal, and control ends of switching transistors of the plurality of sensing units sequentially receive a second control signal to sequentially acquire the photosensitive signals stored by the plurality of storage capacitors.
  4. 4. A display panel according to claim 3, characterized in that the distance between the edge of the optical filter layer orthographically projected on the substrate and the edge of the channel region of the sensing transistor of the first sensing unit orthographically projected on the substrate is larger than 3 μm.
  5. 5. The display panel of claim 3, wherein the sensing module further comprises a third sensing unit, the sensing transistor of the third sensing unit being a bottom gate metal oxide transistor.
  6. 6. The display panel of claim 2, wherein the switching transistor is a bottom gate transistor or a gate light transmissive top gate transistor, the display panel further comprising: and the shading part is arranged on one side of the switching transistor away from the substrate, and the orthographic projection of the channel region of the switching transistor on the substrate is positioned in the orthographic projection of the shading part on the substrate.
  7. 7. The display panel according to claim 6, wherein a distance between an edge of the light shielding portion orthographically projected on the substrate and an edge of the channel region of the switching transistor orthographically projected on the substrate is greater than 3 μm.
  8. 8. The display panel of claim 2, wherein the switching transistor is a top-gate transistor with a gate opaque, and wherein an orthographic projection of a channel region of the switching transistor on the substrate is located within an orthographic projection of the gate on the substrate.
  9. 9. The display panel according to claim 2, wherein the switching transistor is an oxide transistor or a polysilicon transistor.
  10. 10. The display panel of claim 3, wherein the plurality of sensing units of the sensing module are a plurality of sensing transistors of the sensing units are bottom gate polysilicon transistors or top gate polysilicon transistors with light transmitting gates, the display panel further comprising: The color film layer is arranged on one side, far away from the substrate, of the filter layer, the color film layer comprises a plurality of filter parts with different colors, each filter part corresponds to one sensing transistor, and the orthographic projection of a channel region of the sensing transistor on the substrate is positioned in the orthographic projection of the filter part on the substrate.
  11. 11. The display panel of claim 10, wherein the color film layer comprises: And the orthographic projection of the channel region of the switching transistor on the substrate is positioned in the orthographic projection of the shading part on the substrate.
  12. 12. The display panel according to claim 3 or 10, wherein a pitch between two adjacent sensing units is larger than 6 μm, and a pitch between the adjacent sensing transistor and the switching transistor in each sensing unit is larger than 6 μm.
  13. 13. The display panel of claim 2, wherein a length of a channel region of the sensing transistor in a first direction is greater than a length of the channel region of the sensing transistor in a second direction, the first direction being a width direction of the sensing transistor, the second direction being a length direction of the sensing transistor, the first direction being perpendicular to the second direction.
  14. 14. The display panel of claim 1, wherein the plurality of sensing modules are uniformly disposed in the peripheral region along the outline of the display panel.
  15. 15. A display device comprising the display panel of any one of claims 1 to 14.

Description

Display panel and display device Technical Field The disclosure relates to the technical field of display, in particular to a display panel and a display device. Background Under different ambient light, even if the display panel is provided with the same color temperature, different effects can be displayed when the human eyes observe the display panel, and the problems of color difference and the like occur. To enhance the viewing experience, the display color temperature needs to be adjusted for different ambient light. At present, a preset color temperature value is adopted, the real-time performance of color temperature adjustment is poor, and the adjustment precision is poor. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art. BRIEF SUMMARY OF THE PRESENT DISCLOSURE The present disclosure is directed to overcoming the drawbacks of the prior art and providing a display panel and a display device. According to one aspect of the present disclosure, there is provided a display panel including a display area and a peripheral area outside the display area, the display panel further including a substrate and a sensing module disposed at one side of the substrate and located at the peripheral area, the sensing module including a sensing unit including a sensing transistor, a first end of the sensing transistor receiving an electrical signal, a control end of the sensing transistor receiving a first control signal, the sensing transistor being configured to receive ambient light and convert the ambient light into an electrical signal, and output from a second end of the sensing transistor. In one embodiment of the disclosure, the sensing unit further includes a storage capacitor and a switching transistor, a first end of the storage capacitor is connected to a second end of the sensing transistor, a second end of the storage capacitor is grounded, the storage capacitor stores a photosensitive signal output by the second end of the sensing transistor, a first end of the switching transistor is connected to the first end of the storage capacitor, and a control end of the switching transistor receives a second control signal to acquire the photosensitive signal stored by the storage capacitor. In one embodiment of the disclosure, the sensing module includes a plurality of sensing units, first ends of sensing transistors of the plurality of sensing units each receive an electrical signal, control ends of the sensing transistors of the plurality of sensing units sequentially receive a first control signal, and control ends of switching transistors of the plurality of sensing units sequentially receive a second control signal, so as to sequentially acquire photosensitive signals stored by the plurality of storage capacitors. In one embodiment of the present disclosure, the sensing module includes a first sensing unit, a second sensing unit, and the sensing transistor of the first sensing unit and the sensing transistor of the second sensing unit are both gate-transparent top-gate polysilicon transistors. In one embodiment of the disclosure, a filter layer is disposed on a side of the first sensing unit facing away from the substrate, and an orthographic projection of the channel region of the sensing transistor of the first sensing unit on the substrate is located in an orthographic projection of the filter layer on the substrate, and the filter layer is used for transmitting monochromatic light. In one embodiment of the present disclosure, a spacing between an edge of the optical filter layer orthographic projected on the substrate and an edge of the channel region of the sensing transistor of the first sensing unit orthographic projected on the substrate is greater than 3 μm. In one embodiment of the present disclosure, the sensing module further includes a third sensing unit, the sensing transistor of the third sensing unit being a bottom gate metal oxide transistor. In an embodiment of the disclosure, the switching transistor is a bottom gate transistor or a top gate transistor with a light-transmitting gate, the display panel further includes a plurality of light shielding portions, the light shielding portions are disposed on a side of the switching transistor away from the substrate, and a front projection of a channel region of the switching transistor on the substrate is located in a front projection of the corresponding light shielding portion on the substrate. In one embodiment of the present disclosure, a spacing between an edge of the light shielding portion orthographically projected on the substrate and an edge of the channel region of the switching transistor orthographically projected on the substrate is greater than 3 μm. In one embodiment of the present disclosure, the switching