Gray scale voltage adjustment circuit and related circuits and devices
A technology of gray voltage and adjusting circuit, applied in the direction of instruments, static indicators, etc., can solve the problems of poor display effect and uneven brightness, and achieve the effect of improving display effect and uniform brightness
Active Publication Date: 2018-01-02
成都铭科思微电子技术有限责任公司
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However, the display effect of the existing active matrix organic light-emitting display devices is not good, and uneven brightness is prone to occur during the display process, so it needs to be improved.
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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0035] As mentioned in the background technology, because AMOLED (Active Matrix Organic Light Emitting Diode, active matrix organic light emitting display device) has many advantages such as thinner and lighter, active light emission, no viewing angle problem, low cost, low energy consumption, and flexible display, etc., It is widely used in various electronic products. However, the display effect of the existing active matrix organic light-emitting display de...
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The invention discloses a grayscale voltage regulating circuit, a grayscale voltage generating circuit and an active matrix organic light emitting display device; in the working process of the active matrix organic light emitting display device, a reference delay and an actual delay are obtained by a phase comparison module, and the phase of the reference delay is compared with the phase of the actual delay; if the reference delay is ahead of the actual delay, then indicated that the grayscale voltage applied to data lines cannot make the display brightness of the active matrix organic light emitting display device reach an expected effect within a corresponding drive time; therefore, the grayscale voltage input to the data lines has to be compensated, i.e., a voltage regulating module controls a second grayscale voltage selection sub-circuit to output a greater grayscale voltage, until the phase comparison module judges that the actual delay is ahead of the reference delay; meanwhile, a latch module latches the current voltage control signal output by the voltage regulating module, so as to ensure the brightness is even in the working process of the active matrix organic light emitting display device.
Description
technical field [0001] The present invention relates to the field of display technology, and more specifically, relates to a grayscale voltage regulating circuit, a grayscale voltage generating circuit and an active matrix organic light emitting display device. Background technique [0002] At present, because AMOLED (Active Matrix Organic Light Emitting Diode, active matrix organic light emitting display device) has many advantages such as thinner and lighter, active light emission, no viewing angle problem, low cost, low energy consumption, and flexible display, it is widely used. in various electronic products. However, the display effect of the existing active matrix organic light-emitting display device is not good, and uneven brightness is prone to occur during the display process, so it needs to be improved. Contents of the invention [0003] In view of this, the present invention provides a grayscale voltage adjustment circuit, a grayscale voltage generation circu...
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IPC IPC(8): G09G3/3258G09G3/3225
Inventor 吴霜毅
Owner 成都铭科思微电子技术有限责任公司