Triggering drive circuit and organic luminescence display device

Abstract

The present invention discloses a triggering drive circuit. The triggering drive circuit comprises N-level triggering drive circuit units (N>=2, and N is an integer); an nth-level triggering drive circuit unit comprises a pull-up control module, a pull-up module, a signal control module and a pull-down module, wherein 1<=n<=N, and n is an integer; and the pull-up control module, the pull-up moduleand the pull-down module are connected with a pull-up control node, the signal control module and the pull-down module are connected with an output node, and the output node outputs triggering drivesignals. The present invention further discloses an organic luminescence display device. The organic luminescence display device employs the triggering drive circuit to control a time proportion of brightness and darkness of an organic light emitting diode to achieve a function of displaying different gray-scale frames in the same current drive so that it is avoided that a drive current is low andthe current is unstable to cause an uniform frame problem when a low gray scale frame is displayed.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a trigger driving circuit and an organic light-emitting display device. Background technique [0002] The organic light emitting display device utilizes the advantages of high contrast ratio, high color gamut, wide viewing angle, low power consumption, and thinner and thinner brought by organic light emitting diodes (OLEDs), which are favored by the market. The principle of OLED light emission is briefly as follows: under the action of an external electric field, the electrons and holes provided by the cathode and anode are combined in the light-emitting layer to form excitons, and the excitons return to the ground state to emit photons. Therefore, OLED is a current light-emitting device. The circuit in the board controls the magnitude of the current, and then controls the brightness of the light. [0003] A prior art OLED drive circuit such as figure 1 As shown, the OLED driv...

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Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a trigger driving circuit and an organic light-emitting display device using the trigger driving circuit. The trigger driving circuit outputs a plurality of trigger driving signals with adjustable duty ratio and timing, and the trigger driving signal controls The time ratio of the organic light-emitting diodes in the organic light-emitting display device is bright and dark, so as to achieve the purpose of displaying different gray-scale images under the same current drive, and can avoid the problem caused by low driving current and unstable current when displaying low gray-scale. picture unevenness

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