Backlight module and display device
A backlight module and display device technology, applied to static indicators, instruments, etc., can solve the problem of uneven brightness of display panels
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Embodiment 2
[0057] Figure 4 It is a schematic diagram of the circuit structure of a backlight module 20 provided in the second embodiment of the present application. like Figure 4 As shown, the backlight module 20 further includes a plurality of driving circuits 230 .
[0058] Specifically, the number of the driving circuits 230 is the same as the number of the light emitting devices 210 . The plurality of driving circuits 230 are in one-to-one correspondence with the plurality of light emitting devices 210 , so that each driving circuit 230 is used to drive only one light emitting device 210 to emit light. Among the plurality of driving circuits 230, each driving circuit 230 has a first input terminal b, a second input terminal e and an output terminal d. The first input terminal b of each driving circuit 230 is connected to the output terminal a of the power supply 32 , and the output terminal d of each driving circuit 230 is connected to the corresponding light emitting device 210...
Embodiment 3
[0080] For the first data line 130:
[0081] still see figure 1 In the display panel 10 shown, the first data line 130 (ie S1 ) is connected to the input end of the switch circuit 120 corresponding to the first sub-pixel 110 in the odd-numbered rows (the first row and the third row). It can be seen that when the display panel 10 displays a frame of image, if all the sub-pixels 110 connected to S1 emit light, then: before G1 outputs the scan signal, the voltage in S1 is 0; when G1 outputs the scan signal, S1 needs to output data voltage (such as 7V) to the first sub-pixel 110 in the first row; when G2 outputs the scan signal, S1 does not need to output the data voltage; when G3 outputs the scan signal, S1 needs to output the data voltage (such as 7V) to the first sub-pixel 110 in the first row. The first sub-pixel 110 of the 3 rows. That is to say, in the process of G1 and G3 outputting the scan signal, the voltage in S1 needs to climb from 0 to 7V. In other words, when the ...
Embodiment 4
[0093] still see figure 1 In the display panel 10 shown, the voltage in Si is 0 before G1 outputs the scan signal. Therefore, if G1 outputs a scan signal and the first sub-pixel 110 connected to Si emits light, Si needs to output a data voltage (eg, 7V) to the first sub-pixel 110 connected to Si. That is to say, when G1 outputs the scan signal, the voltage in Si needs to climb from 0 to 7V. In this case, the charging amount of the first sub-pixel 110 connected to Si may be insufficient, which may cause the sub-pixel 110 to emit a dim light.
[0094] Based on the above situation, when the controller 220 works: if the target gray level of the first sub-pixel 110 connected by Si is equal to the target gray level of the j+1-th sub-pixel 110 connected by Si, the controller 220 controls the first sub-pixel 110 connected by Si. The light emitting luminance of the light emitting device 210 corresponding to the pixel 110 is equal to the light emitting luminance of the light emitting ...
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