Display device
A display device and pixel technology, applied in lighting devices, static indicators, instruments, etc., can solve the problems of complex circuit structure and no consideration, and achieve the effects of reducing current consumption, improving contrast, and eliminating current consumption
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Embodiment 1
[0053] figure 1 is a schematic diagram of the structure of a pixel PX employed in the display device of the present invention. figure 1 Among them, the pixel PX includes: a light emitting element (hereinafter referred to as an EL element) 1 whose one side electrode (anode) is connected to a power supply node; a switching element S1 connected between a data line DL and an internal node ND1; Switching element S2 connected between ND2 and conducting in the same phase as switching element S1; Switching element S3 connected between EL element 1 and internal node ND1 in a conduction state complementary to switching elements S1 and S2; An N-channel MOS transistor (insulated gate field effect transistor) 2 connected between ND1 and the ground node and whose gate is connected to the internal node ND2; and a capacitive element 3 connected between the internal node ND2 and the ground node.
[0054] The EL element 1 determines the luminous intensity according to its drive current. By se...
Embodiment 2
[0142] Figure 10 It is a timing chart showing the data line precharging and pixel signal writing operations of the display device according to the second embodiment of the present invention. The structure of the display device in Embodiment 2 itself is the same as Figure 5 and Figure 9 The structure shown is the same.
[0143] Such as Figure 10 As shown, the precharge control signals VPO and VPE are alternately activated at times t0, t1, t2.... The precharge control signals VPO and VPE are alternately deactivated at times T0, T1, T2, T3, T4, . . . between times t0, t1, t2.
[0144] With the deactivation of the precharge control signal VPO, the gate line driving signals G ( G1 , G3 ) corresponding to the odd rows are driven to the selected state. Moreover, with the deactivation of the pre-charging control signal VPE, the gate line driving signals G ( G2 , G4 ) corresponding to the even rows are sequentially driven to the active state. Writing to pixels is performed at...
Embodiment 3
[0159] Figure 14 It is a schematic diagram showing the configuration of main parts of the display device according to the third embodiment of the present invention. in the Figure 14 In the shown display device, a precharge current switching switch SPW is provided for a pair of data lines DL1O and DL1E arranged in each column. The precharge current switching switch SPW supplies the precharge current Ip to the corresponding data line via the precharge constant current source IP. The precharge constant current source IP is connected to a power supply node that supplies the power supply voltage VCC, and supplies a precharge current Ip of a predetermined magnitude.
[0160] Should Figure 14 Another structure of the display device shown is the same as Figure 5 The structures of the display devices shown are the same, corresponding parts use the same reference numerals, and detailed description thereof is omitted.
[0161] Figure 15 yes means Figure 14 A timing diagram s...
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