A display panel, a signal processing method, and a display device
A technology of display panel and signal processing unit, applied in static indicators, instruments, etc., can solve the problems of high noise sensitivity and affect the signal-to-noise ratio of images, and achieve the effect of reducing signal noise and improving anti-noise performance
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Embodiment 1
[0040] The display panel described in the embodiment of the present invention includes a plurality of sub-pixels arranged in a matrix, and the sub-pixels are as follows figure 2 Shown includes a light-emitting structure layer 10 and a photosensitive structure layer 20; the photosensitive structure layer is provided with a photosensitive sensing unit 21 and a signal processing unit 22, wherein:
[0041] The photosensitive sensing unit 21 is used to collect the light of the target object and convert it into an electrical signal;
[0042] The signal processing unit 22 is used for digitizing the electrical signal.
[0043] 2 is a schematic diagram of a sub-pixel including a photosensitive structure layer. image 3 It is a schematic diagram of a display panel including a plurality of sub-pixels, the display panel includes a substrate 33 located in a pixel display area, a display layer 31 (including a plurality of sub-pixels such as figure 2The light-emitting structure layer 10 ...
Embodiment 2
[0048] This embodiment describes an example of the alignment between each circuit unit in the circuit layer and the OLED sub-pixel.
[0049] Each pixel unit includes a plurality of sub-pixels, and each sub-pixel includes a light emitting structure layer and a photosensitive structure layer. The position of the photosensitive sensing unit corresponds to the position of the light-emitting area of the sub-pixel (the opening area of the pixel definition layer in the light-emitting structure); corresponding to the location.
[0050] Such as Figure 7 As shown, the position where the photosensitive sensing unit is set corresponds to the position of the light-emitting area of the sub-pixel. Due to the self-luminous nature of OLED, its light-emitting area is transparent, and the light reflected by the object can pass through the light-emitting area and enter the sensing unit to form an intermediate image.
[0051] Another counterpoint example such as Figure 8 As shown, the ...
Embodiment 3
[0056] A signal processing unit circuit such as Figure 9 As shown, the signal processing unit includes a detection circuit and an analog-to-digital conversion (AD) circuit. The detection circuit may be an Active Front End (AFE) circuit, and the electrical signal output by the sensing unit is conditioned, amplified or filtered through the analog front end of the AFE circuit, and then converted into a digital signal through the AD circuit.
[0057] Figure 9 In the example shown, a signal processing unit is connected to a sensing unit for digitizing the output signal of the sensing unit. The sensing unit can be connected with the signal processing unit through a switch circuit. The switch circuit can be implemented with a transistor. In another exemplary embodiment, considering the limitation of the area of the pixel display area, the AFE circuit and the AD circuit will occupy a certain area, therefore, multiple sensing units can be designed to share one signal processing ...
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