| CPC G09G 3/3406 (2013.01) [G02F 1/133612 (2021.01); G09G 3/36 (2013.01); G06F 3/0412 (2013.01); G06F 3/0416 (2013.01); G09G 2320/0626 (2013.01); G09G 2354/00 (2013.01); G09G 2360/144 (2013.01); G09G 2370/10 (2013.01)] | 18 Claims |
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1. A brightness control apparatus, applied to a display panel, wherein the brightness control apparatus comprises an optical detection circuit and an integrated circuit chip connected with the optical detection circuit, wherein
the optical detection circuit comprises at least one transistor, configured to detect a light intensity of light to be detected corresponding to an environment where the display panel is located and generate an electrical signal corresponding to the light intensity of the light to be detected; and
the integrated circuit chip is configured to generate a brightness detection value of the light to be detected based on the electrical signal corresponding to the light intensity of the light to be detected, and adjust display brightness of the display panel according to the brightness detection value of the light to be detected;
wherein the optical detection circuit comprises a detection transistor unit and a reference transistor unit, wherein
the detection transistor unit comprises at least one first transistor, configured to be illuminated by the light to be detected, detect the light intensity of the light to be detected, and generate a first electrical signal corresponding to the light intensity of the light to be detected; and
the reference transistor unit comprises at least one second transistor, configured to be not illuminated by the light to be detected, and generate a second electrical signal corresponding to a light intensity in case of not being illuminated by the light to be detected;
wherein the integrated circuit chip comprises a power supply module, connected with a first terminal of the detection transistor unit, a first terminal of the reference transistor unit, a control terminal of the detection transistor unit, and a control terminal of the reference transistor unit, and configured to provide working voltages to the detection transistor unit and the reference transistor unit; the integrated circuit chip comprises a first pin, the power supply module is connected with the first terminal of the detection transistor unit through the first pin and a first lead-out line, and is connected with the first terminal of the reference transistor unit through the first pin and the first lead-out line.
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