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CN-121982986-A - Display panel and vehicle display

CN121982986ACN 121982986 ACN121982986 ACN 121982986ACN-121982986-A

Abstract

The invention discloses a display panel which comprises a first display area and a second display area. The first display area comprises a plurality of first pixel circuits, a plurality of second pixel circuits and a plurality of first light emitting diodes. The first pixel circuits are configured to drive the first light emitting diodes according to a first voltage across. The second display area comprises a plurality of second light emitting diodes. The second pixel circuits are coupled to the second display area through a plurality of wires extending from the first display area and drive the second light emitting diodes according to a second voltage, wherein the second voltage is larger than the first voltage.

Inventors

  • CHEN YINGJIE

Assignees

  • 友达光电股份有限公司

Dates

Publication Date
20260505
Application Date
20260210
Priority Date
20250926

Claims (12)

  1. 1. A display panel, comprising: a first display area comprising: a plurality of first pixel circuits; a plurality of second pixel circuits, and A plurality of first LEDs, wherein the first pixel circuits are configured to drive the first LEDs according to a first voltage across the first pixel circuits, and A second display area comprising: the second pixel circuits extend from the first display area to the second display area through a plurality of wires and drive the second light emitting diodes according to a second voltage, wherein the second voltage is larger than the first voltage.
  2. 2. The display panel of claim 1, wherein the first voltage across is a voltage difference between a first system high voltage and a system low voltage, the second voltage across is a voltage difference between a second system high voltage and the system low voltage, and the first system high voltage is less than the second system high voltage.
  3. 3. The display panel of claim 2, wherein each of the second pixel circuits is coupled between a cathode terminal of a corresponding one of the second light emitting diodes and the system low voltage through the wires, and an anode terminal of each of the second light emitting diodes is coupled to the second system high voltage through the wires.
  4. 4. The display panel of claim 3, wherein the second pixel circuits are comprised of a plurality of N-type transistors and at least one capacitor.
  5. 5. The display panel of claim 2, wherein the wires coupled to the second leds have an anode equivalent voltage drop and a cathode equivalent voltage drop, and the relationship between the first system high voltage and the second system high voltage is: Wherein the method comprises the steps of For the high voltage of the first system, For this second system to be at a high voltage, For the equivalent voltage drop of the anode, Equivalent voltage drop for the cathode.
  6. 6. The display panel of claim 1, wherein the first voltage across is a voltage difference between a system high voltage and a first system low voltage, the second voltage across is a voltage difference between the system high voltage and a second system low voltage, and the first system low voltage is greater than the second system low voltage.
  7. 7. The display panel of claim 6, wherein each of the second pixel circuits is coupled to an anode terminal of a corresponding one of the second light emitting diodes through the wires, and a cathode terminal of each of the second light emitting diodes is coupled to the second system low voltage through the wires.
  8. 8. The display panel of claim 7, wherein the second pixel circuits are comprised of a plurality of P-type transistors and at least one capacitor.
  9. 9. The display panel of claim 6, wherein the wires coupled to the second leds have an anode equivalent voltage drop and a cathode equivalent voltage drop, and the relationship between the first system low voltage and the second system low voltage is: Wherein the method comprises the steps of For the low voltage of the first system, For this second system to be at a low voltage, For the equivalent voltage drop of the anode, Equivalent voltage drop for the cathode.
  10. 10. The display panel of claim 5 or 9, wherein the anode equivalent voltage drop of each of the second light emitting diodes and the width of the second display region are related by: Wherein the method comprises the steps of The thin film resistance of the wires is the value of the thin film resistance of the wires, The distance occupied by the wires in the second display area from the second pixel circuits to the second light emitting diodes, For the width of the wires of the plurality of wires, In order to drive the driving current respectively flowing through the second light emitting diodes during the driving period, The anode equivalent impedance of the leads at the anode ends of the second light emitting diodes.
  11. 11. The display panel of claim 5 or 9, wherein the cathode equivalent voltage drop and the width of the second display region are related by: Wherein the method comprises the steps of For the total driving current flowing through the cathode terminals of the second light emitting diodes, For the total width of the second display area, In order to provide a pixel pitch that is a function of the pixel pitch, For the respective number of the second light emitting diodes of the respective colors included in each pixel, For the cathode equivalent impedance of the wires at the cathode ends of the second light emitting diodes, For the driving current flowing through each of the second light emitting diodes of each color, n represents different light emitting states of the three second light emitting diodes of RGB, and the different light emitting states correspond to different light emitting currents.
  12. 12. A display for a vehicle, characterized by comprising the display panel according to any one of claims 1 to 11.

Description

Display panel and vehicle display Technical Field The present disclosure relates to a display and a display panel, and more particularly, to a display panel suitable for a vehicle display. Background In the prior art, in order to achieve a "true" full screen effect, a down-display camera (render DISPLAY CAMERA, UDC) technique has been proposed that hides the camera below the display panel. The UDC technology makes the area in front of the camera not be a through hole structure any more, but an area capable of displaying a picture by pixel design. However, the light transmittance of the UDC region significantly affects the imaging quality of the camera, and the transmittance depends on the pixel density and the pixel structure design of the UDC region. Taking a Micro-LED (Micro LIGHT EMITTING Diode) display as an example, the pixel design of the UDC region includes a routing region, a device region (or island region), and a penetrating region. When the pixel density (Pixels Per Inch, PPI) is increased from 100 PPI to 200 PPI, the light transmittance in the UDC region is greatly reduced, and since the area occupied by the Thin-Film Transistor (TFT) circuit is higher than that of the Micro-LED light emitting device, it is challenging to apply the UDC technology to the display with high pixel density if the circuit size cannot be reduced or the circuit design cannot be changed. Disclosure of Invention Accordingly, embodiments of the present disclosure provide a display panel including a first display region and a second display region. The first display area comprises a plurality of first pixel circuits, a plurality of second pixel circuits and a plurality of first light emitting diodes. The first pixel circuits are configured to drive the first light emitting diodes according to a first voltage across. The second display area comprises a plurality of second light emitting diodes. The second pixel circuits extend from the first display area to the second display area through a plurality of wires and drive the second light emitting diodes according to a second cross voltage, wherein the second cross voltage is larger than the first cross voltage. According to an embodiment of the disclosure, the first voltage is a voltage difference between a first system high voltage and a system low voltage, the second voltage is a voltage difference between a second system high voltage and a system low voltage, and the first system high voltage is smaller than the second system high voltage. According to an embodiment of the disclosure, each of the second pixel circuits is coupled between a cathode terminal of a corresponding second light emitting diode and a system low voltage through a wire, and an anode terminal of each of the second light emitting diodes is coupled to a second system high voltage through a wire. According to an embodiment of the disclosure, the second pixel circuits are composed of a plurality of N-type transistors and at least one capacitor. According to an embodiment of the disclosure, the wires coupled to the second light emitting diodes have an anode equivalent voltage drop and a cathode equivalent voltage drop, and the relationship between the first system high voltage and the second system high voltage is that. Wherein, the For a high voltage of the first system,For a high voltage of the second system,For an equivalent voltage drop at the anode,Is the cathode equivalent voltage drop. According to an embodiment of the disclosure, the first voltage across is a voltage difference between a system high voltage and a first system low voltage, the second voltage across is a voltage difference between the system high voltage and a second system low voltage, and the first system low voltage is greater than the second system low voltage. According to an embodiment of the disclosure, each of the second pixel circuits is coupled to an anode terminal of a corresponding second light emitting diode through a wire, and a cathode terminal of each of the second light emitting diodes is coupled to a second system low voltage through a wire. According to an embodiment of the disclosure, the second pixel circuits are composed of a plurality of P-type transistors and at least one capacitor. According to an embodiment of the disclosure, the wires coupling the second light emitting diodes have an anode equivalent voltage drop and a cathode equivalent voltage drop, and the relationship between the first system low voltage and the second system low voltage is that. Wherein, the For a low voltage of the first system,For a low voltage of the second system,For an equivalent voltage drop at the anode,Is the cathode equivalent voltage drop. According to an embodiment of the disclosure, the relationship between the anode equivalent voltage drop of the second light emitting diodes and the width of the second display area is that. Wherein, the Is the film resistance value of the wire,The distance occupied by the wires in the second