CN2857150Y - Self-adaptive brightness control circuit of LED display panel - Google Patents

Self-adaptive brightness control circuit of LED display panel Download PDF

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CN2857150Y
CN2857150Y CNU2005200609285U CN200520060928U CN2857150Y CN 2857150 Y CN2857150 Y CN 2857150Y CN U2005200609285 U CNU2005200609285 U CN U2005200609285U CN 200520060928 U CN200520060928 U CN 200520060928U CN 2857150 Y CN2857150 Y CN 2857150Y
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comparator
light emitting
emitting diode
output
control circuit
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CNU2005200609285U
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梁宁
任平
魏洵佳
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康佳集团股份有限公司
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Abstract

The utility model discloses a self-adaptive brightness control circuit of LED display panel, including a counter, a duty ratio pre-set value input device and a size comparator, wherein the counter and the duty ratio pre-set value input device respectively compares the enumerated data and the duty ratio pre-set value input size comparator to control the output value of the comparator. In the self-adaptive brightness control circuit of LED display panel, the duty ratio pre-set value input device inputs the duty ratio pre-set value into the size comparator, meanwhile the counter inputs several calculating pulses into the size comparator, compares the duty ratio pre-set value and the input value of the counter, controls the output value of the comparator, wherein the input value can be used to control and change the duty ratio of the output enabled value in the LBD display panel drive circuit, thereby the full screen brightness level can be adjusted self-adaptively.

Description

发光二极管显示屏自适应亮度控制电路 LED display adaptive luminance control circuit

【技术领域】本实用新型涉及一种显示器的自适应亮度控制电路。 TECHNICAL FIELD The present invention relates to a display adaptive luminance control circuit.

【背景技术】由于发光二极管(Light Emitting Diode,LED)显示屏具有色彩鲜艳、亮度高、寿命长、工作稳定可靠等优点,在许多行业都得到了广泛的应用,如在车站、码头、商场、银行等公共场所将发光二极管显示屏用于信息发布。 BACKGROUND Since the light-emitting diode (Light Emitting Diode, LED) display having a colorful, high brightness, long life, stable and reliable, in many industries have been widely used, such as in stations, terminals, shopping malls, banks and other public places, the LED display for information dissemination.

一块发光二极管显示屏存在数以百万计的发光二极管,这些发光二极管直接与驱动芯片连接,驱动芯片普遍采用串并转换芯片,驱动芯片以级联方式联接,如果全屏的驱动芯片级联成一串,数据传输比较缓慢,有时甚至无法正常工作。 A light emitting diode presence of millions of light-emitting diode display, light emitting diodes are connected directly to the driving chip, commonly used driving chip serial to parallel converter chip, the chip driver coupled in cascade, if full-screen driver chip concatenated into a string data transmission is slow and sometimes does not work.

目前业界通常把发光二极管显示屏分成多个显示单元,每个显示单元内的数据串行传送,而多个显示单元之间则并行传送。 Currently the industry typically light emitting diode display into a plurality of display units, each display unit in the data serial transfer and parallel transfer between the plurality of display units. 如图1所示,一个显示单元具有确定的像素点数,像素点数用p×q(p、q为2的n次幂2n)表示,其中q为行数,p为每行的像素点数。 As shown, a display unit having a certain number of pixels, the number of pixels is represented by p × q (p, q is the n-th power of 2n 2), wherein q is the number of rows, p is the number of pixels per line. 例如,可取64×4(共256点)、32×8(共256点)、32×4(共128点)等,一块发光二极管显示屏通常由大量的显示单元构成。 For example, preferably 64 × 4 (256 points in total), 32 × 8 (256 points in total), 32 × 4 (128 points total) and the like, a light emitting diode display typically consists to a large display unit.

目前,大多采用脉宽调制方法来实现发光二极管显示屏的灰度控制,也就是周期性改变光脉冲宽度,即占空比,只要这个重复点亮发光二极管的周期足够短,即显示频率足够高时,由于人眼的视觉暂留而感觉不到发光象素在抖动。 Currently, most of the pulse width modulation method to achieve gray scale control of the LED display, i.e. periodically changing the optical pulse width, i.e. duty cycle, as long as the light emitting diode lighting cycle is repeated sufficiently short, i.e., a display frequency is high enough when, due to the human eye's persistence of vision not feel light-emitting pixels in jitter.

所谓亮度等级,是指一种独立于灰度等级之外的,全屏整体性的亮度级别。 So-called brightness level, refers to a gradation independent, full-screen overall brightness level.

常规的发光二极管显示屏,其亮度等级是固定的。 Conventional light-emitting diode display, the brightness level is fixed. 不管是阴天还是晴天,白天还是黑夜,发光二极管显示屏均为同一等级的亮度输出,不能随环境自适应调节其亮度等级,有时会造成观看效果不佳。 Whether it is sunny or cloudy, day or night, LED display and output are the same brightness level, the brightness level can not be adaptively adjusted with the environment, sometimes resulting in poor viewing.

【实用新型内容】为克服现有技术的发光二极管显示屏的亮度不能自适应调节的缺陷,本实用新型提供一种能对发光二极管显示屏的亮度自适应调节的发光二极管显示屏自适应亮度控制电路。 [SUMMARY To overcome the brightness of the LED display of the prior art can not be adaptively adjusted defects, the present invention is to provide a display of the adaptive brightness control brightness of the LED light emitting diode display of the adaptive circuit.

本实用新型为解决上述技术问题所提供的一种技术方案是:提供一种发光二极管显示屏自适应亮度控制电路,其包括一计数器、一占空比预设值输入装置和一大小比较器,其中计数器和占空比预设值输入装置分别将一计数值和一占空比预设值输入大小比较器比较以控制比较器的输出值。 The present invention is a technical solution to solve the above technical problem is provided by: providing a light emitting diode display adaptive brightness control circuit which includes a counter, a duty cycle preset value input means and a size of the comparator, wherein the counter and the duty cycle preset value input means to a respective count value and a duty cycle preset value input magnitude comparator compares the control value to the comparator output.

与现有技术相比,本实用新型的发光二极管显示屏自适应亮度控制电路中,该占空比预设值输入装置将一占空比预设值输入该大小比较器,同时计数器将若干计数脉冲输入该大小比较器,将该占空比预设值与该计数器的输入值比较大小,控制比较器输出值,该输入值可用于控制改变发光二极管显示屏驱动芯片的输出使能端的占空比,从而可以自适应地调节全屏亮度等级。 Compared with the prior art, the present invention is a light emitting diode display adaptive brightness control circuit, the duty cycle preset value input means to input a predetermined value of the duty cycle of the comparison and, at the same time the counter counts a number of the size of the pulse input of the comparator, the duty cycle value is compared in magnitude with a preset value input of the counter, the control comparator output value, the input value may be used to control the display driver to change the output of the light emitting diode chip enable terminal duty ratio, which can adaptively adjust the brightness level of the full screen.

【附图说明】图1是一种现有技术的发光二极管显示屏的构成示意图。 BRIEF DESCRIPTION FIG. 1 is a schematic configuration of a light emitting diode display screen of a prior art.

图2至图4是显示脉宽不同时,全屏亮度等级与灰度值的关系图。 2 to 4 is not the same width, overall brightness level diagram of the gradation value.

图5是发光二极管的一种驱动芯片TB62 726的输出结构图。 FIG 5 is a light emitting diode driving chip architecture of FIG TB62 726 is output.

图6至图7是显示脉宽不同时,全屏亮度等级的调节原理示意图。 6 to FIG. 7 is a pulse width is not the same, a schematic view of the principle of adjusting the overall brightness level.

图8是本实用新型的发光二极管显示屏的电路框图。 FIG 8 is a circuit block diagram of the present invention a light emitting diode display.

【具体实施方式】对于全屏亮度等级控制方法,以下以像素点数为64×4=256点的显示单元为例进行说明,其它像素点数的显示单元与其类似。 DETAILED DESCRIPTION [luminance level for the full-screen control method, the number of pixels in the display unit 64 × 4 = 256 points as an example, the number of pixels of the display unit other analogous thereto.

一个单位的显示脉宽,通常包含N个移位时钟周期,移位时钟周期即为驱动芯片的工作时钟周期,0≤N≤256,一个单位的显示脉宽包含的移位时钟周期数的最大值等于显示单元像素点数。 The pulse width of a display unit, generally comprise N shift clock cycles, the shift clock cycle is an operating clock cycle of the driving chip, 0≤N≤256, maximum pulse width of a display unit comprising a shift clock cycle value is equal to the number of pixels of the display unit.

如图2所示,发光二极管显示屏普通采用脉宽调制技术实现灰度控制。 2, a light emitting diode display using pulse width modulation techniques to achieve common gray scale control. 灰度0对应的显示脉宽为0,灰度1对应的显示脉宽为1个单位,......,灰度254对应的显示脉宽为254个单位,灰度255对应的显示脉宽为255个单位。 0 gradation display corresponding to the pulse width is 0, 1 gradation corresponding to the display width of one unit, ......, show the pulse width corresponding to 254 gray scale units 254, 255 corresponding to the display gradation pulse width of 255 units.

当N=256时,如图2所示,此时全屏亮度等级最大,随着N的减少,全屏亮度等级相应减少,当N=0时全屏LED熄灭。 When N = 256, as shown in Figure 2, the maximum luminance level at this time the full screen, with the reduction of N, a corresponding reduction in overall brightness level, the LED is off when N = fullscreen 0:00. 图3是N=190时,对应的全屏亮度等级,该全屏亮度等级小于图2所示的全屏亮度等级。 FIG 3 is N = 190, the brightness level corresponding to the full-screen, full-screen brightness level is lower than the full-screen brightness levels shown in FIG. 图4中,N=120。 In FIG. 4, N = 120. 图4的全屏亮度等级小于图2和图3所示的全屏亮度等级。 FIG overall brightness level of less than 4 shown in FIG. 2 and FIG. 3 overall brightness level. 图2至图4中只画出了显示脉冲,未画出移位时钟。 Figures 2 to 4 shown in the display pulses, the shift clock is not shown.

以下说明全屏亮度等级的调节方法。 The following described method of adjusting the overall brightness level.

发光二极管驱动芯片一般均包含有输出引脚OUT0~OUT15和输出使能引脚/OE。 The LED driving chip generally includes output pins OUT0 ~ OUT15 and output enable pin / OE. 以日本东芝公司生产的发光二极管驱动芯片TB62726为例,OUT0~OUT15可直接驱动16个发光二极管,n片驱动芯片TB62726级联可驱动16n个发光二极管,同一单元内所有驱动芯片的输出使能引脚/OE连接在一起。 In driving the light emitting diode chip produced by Toshiba TB62726 an example, OUT0 ~ OUT15 can directly drive the light emitting diodes 16, n-chip driver chips TB62726 cascaded drive LEDs 16n, the outputs of all of the driver chip within the same unit enabled primer foot / OE together. 图5显示一块驱动芯片TB62726的输出结构。 Figure 5 shows the structure of an output of the driver chip TB62726.

输入到Q0~Q15的信号均为脉宽调制信号,一个显示脉宽是固定的,包含256个移位时钟周期,即驱动芯片需要经过256次移位操作之后,才能产生这些脉宽调制信号,该脉宽调制信号称为Q信号,Q信号用于实现发光二极管的灰度控制。 Q0 ~ Q15 is input to the signal are pulse width modulated signal, a display pulse width is fixed, comprising a shift clock 256 cycles, i.e. after the drive chip requires 256 shift operation, in order to produce the pulse width modulated signal, the pulse width modulated signal is called a Q signal, Q signal for achieving gray scale control of light emitting diodes.

发光二极管全屏亮度等级由输出使能信号控制,如果输出使能信号为恒定的逻辑低电平,经反相器反相后为恒定的逻辑高电平,“开通”TB62726输出端的与门,OUT0~OUT15的1个显示脉宽等于Q信号的1个显示脉宽,即包含N=256个移位时钟周期,如图2所示,对应的全屏亮度等级最高。 The overall brightness level of the light emitting diode output enable control signal, if the output enable signal is a constant logic low level, the inverted by inverting a constant logic high level, "open" and the output of gate TB62726, OUT0 one display width is equal to Q ~ OUT15 one display pulse signal, i.e., shift comprises N = 256 clock cycles, the maximum brightness level corresponding to full screen 2 shown in FIG.

如果输出使能信号是一个周期性脉冲,当输出使能信号为逻辑高电平时,经反相器反相后“关断”TB62726输出端的与门,全屏LED熄灭;反之,当/OE为逻辑低电平时,经反相器反相后“开通”TB62726输出端的与门,发光二极管是点亮还是熄灭受Q信号控制,Q为逻辑高时点亮,Q为逻辑低时熄灭,由于Q信号在实现每一级灰度时保持固定的占空比不变,故不会影响显示图像的灰度等级。 If the output enable signal is a periodic pulse, when the output enable signal is logic high, after inverted by an inverter "off" the output of the AND gate TB62726, full screen LED off; the other hand, when the / OE is logic low, after the inverter inverted "on" signal TB62726 since Q output of the aND gate, the light emitting diode is lit or off by the control signals Q, Q of the lighting logic high, logic low Q is turned off, duty cycle remains fixed at the same time achieving a gray scale of each, it will not affect the gradation of the display image. 因此,通过控制输出使能信号的占空比即可整体性地控制全屏发光二极管的亮度等级,而保持灰度等级不变。 Thus, by controlling the duty ratio of the output enable signal to the overall level of full-screen brightness control of the light emitting diode, while maintaining the same gradation.

图6和图7显示对应于灰度值4时,两种全屏亮度等级的情况。 Figures 6 and 7 show corresponding to the gradation value 4, where two kinds of overall brightness levels. OUTn信号即是图3或图4中灰度值4的输出脉冲信号。 Signal OUTn outputs a pulse signal that is the gradation value 4 in FIG. 3 or FIG. 4. 显然,图6中OUTn的脉宽大于图7中OUTn的脉宽,即图6的亮度等级大于图7中的亮度等级。 Obviously, in FIG. 6 OUTn pulse width greater than the pulse width OUTn FIG. 7, i.e., the luminance level is larger than the luminance level of FIG. 6 in FIG. 7. 由图中可知,输出使能信号的占空比越大,发光二极管显示屏的亮度等级越低。 Seen from the figure, the greater the duty ratio of the output enable signal, the lower the brightness level of the LED display.

当改用像素点数为32×4(共128点)的显示单元时,1个单位的显示脉宽最多包含128个移位时钟周期。 When the number of pixels of the display unit to switch 32 × 4 (a total of 128 points), the display unit comprises a pulse width of up to 128 of shift clock cycles. 总之,1个单位的显示脉宽最多包含的移位时钟周期个数等于显示单元的点数。 In short, the number of clock cycles shift the display unit comprises a pulse width at most equal to the number of points of the display unit.

请参阅图8,本实用新型的发光二极管显示屏亮度控制电路2包括计数器21、大于比较器22、选择器23和传感器24。 Referring to FIG. 8, the present invention is a light emitting diode display brightness control circuit 2 comprises a counter 21, the comparator is greater than 22, the selector 23 and the sensor 24. 该计数器21包括复位端reset、时钟脉冲输入端sclk和输出端C。 The counter 21 includes a reset terminal reset, a clock input terminal and an output terminal C. sclk 该大于比较器22包括第一输入端、第二输入端和输出端。 The comparator 22 is greater than a first input, a second input and an output. 该选择器23包括第一输入端、第二输入端、第三输入端和输出端。 The selector 23 comprises a first input terminal, a second input terminal, a third input and an output.

计数器21的输出端C与大于比较器22的第一输入端相连接。 Counter output of C 21 is connected to a first input terminal of the comparator 22 is greater than. 选择器23的第一输入端与传感器24相连接,选择器23的第二输入端具有一个第一占空比预设值,选择器23的第三输入端与手动模式/自动模式开关相连接,用于选择手动模式或者自动模式。 A first selector 23 and the input terminal 24 is connected to the sensor, a second input terminal of the selector 23 having a first duty cycle preset value, a third input terminal of the selector 23 and the manual mode / automatic mode switch is connected to for selecting an automatic mode or a manual mode. 选择器23的输出端P与大于比较器22的第二输入端相连接,大于比较器22的输出端与驱动芯片的输出使能引脚/OE相连接。 P 23 output terminal of the selector is connected to a second input terminal of the comparator 22 is greater than, greater than the output of the comparator 22 and the output terminal of the driving chip enable pin / OE is connected.

传感器24采用光敏传感器,如光探测器或光电传感器等。 Sensor 24 uses a photosensor, such as a photoelectric sensor or photodetector. 该传感器24可感知环境亮度,根据环境亮度的不同,输出不同的信号,该信号可改变输出使能引脚/OE信号的占空比,自适应地调节全屏亮度等级。 The sensor 24 can perceive the ambient brightness, depending on different ambient brightness, the output signal, the output signal may change the duty ratio pin / OE signal, adaptively adjust the overall brightness level.

以N=256像素点的显示单元为例,如图8所示,计数器21是一个模为N-1的循环计数器,sclk是计数器21的时钟信号,也是发光二极管驱动芯片(图未示)的移位信号。 N = 256 pixels in a display unit as an example, as shown in FIG. 8, the counter 21 is a modulo loop counter N-1, and SCLK is a clock signal counter 21, are LED driving chip (not shown) of shift signal. 每一显示场开始时,reset将计数器21清零,之后在sclk控制下从0开始计数,计数器2 1的输出值C依次等于0、1、2、......、N-1、0、1、......,等。 When the start of each display field, reset the counter 21 is cleared, and then starts counting from 0 at sclk control, counter output value C 2 1 sequentially equal to 0,1,2, ......, N-1, 0,1, ......, and so on.

如果选择手动模式,选择器23的输出值P等于第一占空比预设值1;如果选择自动模式,选择器23的输出值P等于第二占空比预设值2,即,等于传感器24的输出值。 If the manual mode is selected, selecting the output value P 23 is equal to a first duty cycle preset value 1; if the automatic mode is selected, the output selector value P 23 is equal to the second duty cycle preset value 2, i.e., equal to the sensor 24 is an output value. 当C>P时,大于比较器22的输出值,也即驱动芯片的输出使能引脚/OE的信号为高电平'1'。 When C> P, greater than the output value of the comparator 22, i.e., the output of the driver chip enable pin / OE signal of a high level '1'. 反之,当C≤P时,大于比较器22的输出值,也即驱动芯片的输出使能引脚/OE的信号为低电平'0'。 Conversely, when C≤P, the value larger than the output of the comparator 22, i.e., the output of the driver chip enable pin / OE signal of a low level '0'. 即,大于比较器22的输出值,即驱动芯片的输出使能引脚/OE的信号是一个占空比受选择器23的输出值P控制的、周期等于N个sclk周期的脉冲信号。 I.e., greater than the output value of the comparator 22, i.e., the output of the driver chip enable pin / OE signal is subject to a duty cycle of the output value of the selector 23 is controlled by P, a period equal to N pulse cycle signals sclk. 如前所述,/OE的占空比控制发光二极管显示屏的亮度等级。 As described above, / OE controls the duty cycle of the LED display brightness level.

如果处于自动模式,传感器24输出信号控制的第二占空比预设值2,从而实现发光二极管显示屏的自适应亮度控制。 If in automatic mode, the sensor 24 outputs a signal for controlling the duty ratio of the second preset value 2, the adaptive brightness control in order to achieve a light emitting diode display.

本实用新型电路,只通过一路信号,控制发光二极管显示屏驱动芯片的输出使能引脚/OE的占空比,即可实现对全屏亮度等级整体性地控制,而且,全屏亮度等级的改变,与发光二极管显示屏灰度控制相互独立,即发光二极管显示屏灰度表现不因全屏亮度改变而改变。 The present invention circuit, by only one signal, controlling the light emitting diode display driver chip output enable pin OE duty cycle / can realize overall control of the overall brightness level, and, to change overall brightness level, light emitting diode display gradation control independently, i.e., without changing the overall brightness change due to LED display gradation expression.

当然,本实用新型不限于上述实施方式所述,还可以有其他变化。 Of course, the present invention is not limited to the above embodiments, there can be other variations. 例如,该大于比较器22也可以采用小于比较器来代替,只需将选择器23的输出端接入比较器22的第一输入端,而将计数器21的输出端接入比较器22的第二输入端即可。 For example, the greater than comparator 22 is smaller than the comparison may be used instead, only the output of the selector 23 is connected to the first input of the comparator 22, the output of the first counter 21 access comparator 22 two-input can. 所述传感器24也可以采用光敏晶体管。 The sensor 24 may also be employed phototransistor. 该选择器23可以是二选一选择器,也可以是多路选择器。 The selector 23 may choose one selector may be a multiplexer.

Claims (9)

1.一种发光二极管显示屏自适应亮度控制电路,其特征在于包括:一计数器、一占空比预设值输入装置和一大小比较器,其中计数器和占空比预设值输入装置分别将一计数值和一占空比预设值输入大小比较器比较以控制比较器的输出值。 1. A light emitting diode display adaptive brightness control circuit, comprising: a counter, a duty cycle preset value input means and a size of the comparator, wherein the counter and the duty cycle preset value input means, respectively, a count value and a duty cycle preset value input to control the magnitude comparator compares the output value of the comparator.
2.根据权利要求1所述的发光二极管显示屏自适应亮度控制电路,其特征在于:所述占空比预设值输入装置包括手动输入模块和自动输入模块,其通过一选择器切换手动输入和自动输入模式。 The light emitting diode display according to claim 1, wherein the adaptive luminance control circuit, wherein: the duty cycle preset value input means comprises a manual input module and an input module automatically, or manually by a switch which selector and the automatic input mode.
3.根据权利要求2所述的发光二极管显示屏自适应亮度控制电路,其特征在于:所述自动输入模块包括一其输出信号用于控制自动输入模块输出的占空比预设值的传感器。 The light emitting diode display according to claim 2, wherein the adaptive luminance control circuit, wherein: said automatic input module comprises a sensor whose output signal is used to control automatic input module output duty cycle preset value.
4.根据权利要求3所述的发光二极管显示屏自适应亮度控制电路,其特征在于:所述传感器是光敏传感器。 4. The light emitting diode display of claim 3, wherein the adaptive luminance control circuit, wherein: said sensor is a photosensor.
5.根据权利要求2所述的发光二极管显示屏自适应亮度控制电路,其特征在于:所述选择器是二选一选择器。 The light emitting diode display according to claim 2, wherein the adaptive luminance control circuit, wherein: said selector is selected from a two selector.
6.根据权利要求2所述的发光二极管显示屏自适应亮度控制电路,其特征在于:所述选择器是多路选择器。 6. The light emitting diode display according to claim 2, the adaptive luminance control circuit, wherein: the selector is a multiplexer.
7.根据权利要求1所述的发光二极管显示屏自适应亮度控制电路,其特征在于:所述大小比较器是大于比较器。 The light emitting diode display according to claim 1, wherein the adaptive luminance control circuit, wherein: said comparator is greater than the size of the comparator.
8.根据权利要求1所述的发光二极管显示屏自适应亮度控制电路,其特征在于:所述大小比较器是小于比较器。 8. The light emitting diode display of claim 1, wherein the adaptive luminance control circuit, wherein: the comparator is less than the size of the comparator.
9.根据权利要求1所述的发光二极管显示屏自适应亮度控制电路,其特征在于:所述计数器包括复位端、时钟脉冲输入端和输出端;所述大小比较器包括第一输入端、第二输入端和输出端;所述计数器的输出端与比较器的第一输入端相连接;比较器的输出端与发光二极管显示屏的驱动芯片的输出使能端相连接。 Light emitting diode according to claim 1, said display screen adaptive brightness control circuit, wherein: the counter comprises a reset terminal, a clock input and an output; the magnitude comparator includes a first input terminal, a first two input terminals and an output terminal; a first input and the output of said counter comparator connected end; the output of the comparator and the output of the light emitting diode display driver chip enable end connection.
CNU2005200609285U 2005-07-11 2005-07-11 Self-adaptive brightness control circuit of LED display panel CN2857150Y (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101977464A (en) * 2010-09-25 2011-02-16 陈光德;倪端 LED power control chip
CN102414739A (en) * 2009-04-23 2012-04-11 全球Oled科技有限责任公司 Display device
CN104715713A (en) * 2013-12-17 2015-06-17 昆山工研院新型平板显示技术中心有限公司 Multi-path signal selector, displayer of multi-path signal selector and multi-path signal selection method of multi-path signal selector
CN105206209A (en) * 2015-10-26 2015-12-30 广东美的制冷设备有限公司 Display brightness control method and device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102414739A (en) * 2009-04-23 2012-04-11 全球Oled科技有限责任公司 Display device
CN102414739B (en) * 2009-04-23 2014-10-08 全球Oled科技有限责任公司 Display device
CN101977464A (en) * 2010-09-25 2011-02-16 陈光德;倪端 LED power control chip
CN101977464B (en) * 2010-09-25 2014-01-15 陈光德 LED power control chip
CN104715713A (en) * 2013-12-17 2015-06-17 昆山工研院新型平板显示技术中心有限公司 Multi-path signal selector, displayer of multi-path signal selector and multi-path signal selection method of multi-path signal selector
CN104715713B (en) * 2013-12-17 2017-06-16 昆山工研院新型平板显示技术中心有限公司 A kind of multiple signals selector and its display, multiple signals system of selection
CN105206209A (en) * 2015-10-26 2015-12-30 广东美的制冷设备有限公司 Display brightness control method and device
CN105206209B (en) * 2015-10-26 2018-05-08 广东美的制冷设备有限公司 The control method and device of display brightness

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