83results about How to "Avoid uneven display brightness" patented technology

The invention relates to a pixel driving circuit, a display device and a pixel driving method. The pixel driving circuit comprises a reset unit, and due to the rest unit, a storage capacitor not only stores data voltage in a charging stage, but also stores a threshold voltage of a driving unit so as to compensate the driving unit in a driving stage. The working current of the driving unit is no longer affected by the threshold voltage so as to eliminate the influence of the threshold voltage of the driving unit on the working current, so that the problem that the display brightness of a light emitting element is not uniform as the threshold voltage is inconsistent is solved, thereby improving the display quality of the display device. In addition, by moving the reset unit out of an effective display region, a row of pixel driving circuits share the reset unit, so that the aperture ratio of pixels can be greatly improved, the current density of an organic light emitting layer can be reduced and the service life of a display panel is prolonged.

The invention provides a pixel circuit, a display panel and a display device. The pixel circuit comprises a pixel compensation module, a light-emitting module and a touch detection module. The provided pixel circuit integrates the pixel compensation module and the touch detection module, and the pixel compensation module and the touch detection module share a data voltage line and scanning signal lines. Therefore, the number of signal circuits can be reduced, and accordingly, the pixel pitch is narrowed substantially, the IC cost is reduced, and higher pixel density is obtained. Meanwhile, in the pixel circuit, working current flowing through an electroluminescence unit is free from the effect of threshold voltage of a corresponding drive transistor, and the problem that display brightness is not uniform due to threshold voltage shift of the drive transistor can be solved.

The invention provides a touch display device. The touch display device comprises a display module, a flexible printed circuit board, a touch module and a colloid layer, wherein the display module contains a display surface, the flexible printed circuit board is connected with the edge of the display surface, the touch module contains a faying surface arranged opposite to the display surface, the faying surface and the display surface are fit, an interval is formed between the touch module and the flexible printed circuit board, and the colloid layer fills the interval to fix the flexible printed circuit board to the faying surface of a touch panel. The flexible printed circuit board is fixed to the touch module through the colloid layer, so that the touch display device eliminates the stress generated when the flexible printed circuit board is bent, and solves the problems that the display module deforms due to the stress and further display brightness is uneven. The invention further provides a manufacturing method of the touch display device.

The invention discloses a pixel circuit, a driving method thereof, and a display device, and belongs to the technical field of display. The pixel circuit includes a compensation sub-circuit, a regulation sub-circuit, and a detection sub-circuit. Since the compensation sub-circuit can output a first power signal to a first node, the adjustment sub-circuit can adjust the potential of a second node according to the potential of the first node. Therefore, a drive current outputted to a light-emitting unit can be enabled to be independent of a threshold voltage of a driving transistor, i.e., achieving the internal compensation of the threshold voltage of the drive transistor. Since the detection sub-circuit can output the potential of the second node to a detection signal line connected to an external compensation circuit, the external compensation circuit can adjust the data signal voltage according to the voltage of the light-emitting unit, i.e., achieving external compensation of the threshold voltage of the driving transistor. The problem that the difference of the driving currents flowing through the respective light-emitting units due to the threshold voltage of the driving transistor causes the non-uniform display brightness of a display device is solved.

The invention discloses a mother board behind a box, a liquid crystal display panel and a corresponding manufacturing method. Due to the fact that a first elastic part is additionally arranged on the contact position of a first mother board body and a first frame sealing adhesive and/or a second frame sealing adhesive, or/ and a second elastic part is additionally arranged on the contact position of a second mother board body and the first frame sealing adhesive and/or the second frame sealing adhesive. When the mother board behind the box is cut, the additionally-arranged elastic parts have certain elasticity, the problems that generated deformation can not restore due to insufficient elasticity of the frame sealing adhesives, and the box thickness of a liquid crystal box is not uniform are avoided. Accordingly, the problem that the manufactured liquid crystal box is not uniform in display brightness is avoided, and display quality is improved. Besides, the elastic parts are added to corresponding areas of the frame sealing adhesives so that the use quantity of the frame sealing adhesives can be reduced and production cost also can be reduced.

The present invention provides a pixel circuit, a driving method thereof and a display device. The pixel circuit comprises a drive module, an energy storage module, an electroluminescent module, a data voltage writing module, a threshold compensation module and a reset module, and also comprises an operating voltage input terminal, a data voltage input terminal and a plurality of control signal input terminal. The threshold compensation module is capable of introducing the voltage on the compensation voltage input terminal so as to set the voltage on the control terminal of the drive module to be a sum of the threshold voltage of the drive module and the operating voltage, thus the driving current flowing through the electroluminescent units is not affected by the threshold voltage of corresponding drive modules, such that the problem of uneven display brightness caused by the threshold voltage drift of driving transistors can be solved.

The invention provides a pixel circuit, a display panel and a display device. The pixel circuit comprises a pixel compensating module, a light-emitting module and a touch control detecting module. According to the pixel circuit, the pixel compensating module and the touch control detecting module are integrated, and the pixel compensating module and the touch control detecting module share a data voltage line and a scanning signal line. Thus, the number of signal lines is reduced, the distance between pixels is remarkably reduced, the IC cost is reduced, and the higher pixel density can be achieved. Meanwhile, work current, flowing through an electroluminescent unit, in the pixel circuit cannot be affected by threshold voltage of a corresponding driving transistor. Thus, the problem of uneven display brightness caused by threshold voltage drift of the driving transistor is solved.

The invention provides a pixel circuit which comprises two sub-pixel circuits. Each sub-pixel circuit comprises five switch units, a driving unit, an energy storage unit and an electroluminescence unit, and the first switch unit, the second switch unit and the fifth switch unit of the first sub-pixel circuit and the first switch unit, the second switch unit and the fifth switch unit of the second sub-pixel circuit share a scanning signal line. In the pixel circuit, working currents flowing through devices of the electroluminescence units are not influenced by the threshold voltage of corresponding driving transistors, and the problem that uneven display luminance is caused by threshold voltage drifting of the driving transistors is thoroughly solved. In the pixel circuit, driving of two pixels is completed through one compensating circuit, two adjacent pixels share a plurality of signal lines, the number of the signal lines, used in the pixel circuit, in the display device can be decreased, the cost of integration circuits can be reduced, the pixel distance can be decreased, and the pixel density can be increased.

The invention relates to the technical field of display equipment, and discloses a lamp panel, a backlight module and a display device. The lamp panel comprises a flexible circuit board which comprises a first side face and a second side face; a light source which is positioned on the first side surface of the flexible circuit board; a supporting plate which is located on the second side face of the flexible circuit board and comprises a plurality of supporting parts capable of being spliced in sequence, each supporting part is of a strip-shaped structure, and the side, close to the flexible circuit board, of each supporting part is connected with the second side face of the flexible circuit board; wherein the flexible circuit board can be bent in the arrangement direction of the pluralityof supporting parts; when the flexible circuit board is in a flattened state, the sides, away from the flexible circuit board, of the multiple supporting parts are flatly spliced. When the flexible circuit board is in a bent state, the sides, away from the flexible circuit board, of the multiple supporting parts are disconnected. According to the lamp panel, the bending stress can be reduced, good attachment between the lamp panel and the back plate is guaranteed, the light source light mixing distance is not changed, and then the problem that the display brightness of the curved display panel is uneven due to the bending stress problem is solved.

The invention provides a pixel circuit and a display device. The pixel circuit comprises two sub-pixel circuits. Each sub-pixel circuit comprises five switch units, a driving unit, an energy storage unit and an electroluminescence unit. The two sub-pixel circuits share the same data voltage wire and multiple scanning signal lines. According to the pixel circuit, working currents flowing through devices of the electroluminescence unit can be free of influence of a threshold voltage of a corresponding driving transistor, and therefore the problem of non-uniform display brightness caused by drift of the threshold voltage of the driving transistor is thoroughly solved. Meanwhile, a compensating circuit is adopted for driving two pixels, and the two adjacent pixels share multiple signal lines, so the number of the signal lines used for the pixel circuit in the display device can be reduced, the cost of an integrated circuit is lowered, the pixel distance is shortened, and the pixel density is increased.

An embodiment of the invention provides a pixel driving circuit, a driving method therefor and a display device; wherein the pixel driving circuit, the pixel driving method and the display device relate to the technical field of displaying. The pixel driving circuit, the driving method therefor and the display device can prevent a defect of display brightness non-uniformity of a display device caused by a threshold voltage. The pixel driving circuit comprises an input module, a compensation module, a driving module, a light emitting module and a control signal input module. The input module is controlled by a first gate signal end and is used for outputting the signal of a data voltage end to the compensation module. The compensation module is controlled by the input module and a threshold voltage control end and is used for compensating the threshold voltage of the driving module. The light emitting module is controlled by a first control signal end and is used for driving the light emitting module to emit light. The control signal input module is controlled by a second control signal end and a third control signal end and is used for outputting the signal of the second voltage end or the third voltage end to the first control signal end. The pixel driving circuit, the driving method therefor and the display device are used for driving a pixel unit to emit light.

The invention provides a pixel driving circuit and a control method of the pixel driving circuit. In the present invention, in response to a light-emitting signal, by using a reference voltage provided by a first node, a series structure of a first capacitor and a second capacitor and a bootstrap effect of the second capacitor, transmission of the reference voltage and a data signal voltage is realized, so that the driving current is irrelevant to the threshold voltage of the first transistor and the positive voltage of the power supply; the problem of non-uniform display brightness in a traditional display device is solved, and the visual display quality of the display device is improved.

The invention discloses a pixel circuit and a driving method thereof, a display substrate and a display device. Because the light-emitting control circuit can output a direct-current power supply signal provided by the direct-current power supply end to the second node and control the third node to be conducted with the light-emitting element, the compensation circuit can adjust the potential of the first node according to the potential of the second node or the third node. Therefore, when the pixel circuit is driven, the potential finally written into the first node is only related to the threshold voltage of the driving transistor, the potential of the data signal provided by the data signal end and the potential of the target node. Moreover, the driving signal output by the driving circuit is related to the potential difference between the first node and the target node, so that the driving signal output by the driving circuit is irrelevant to the potential of the target node, namely the potential of the direct-current power supply signal. Therefore, the problem that the display brightness of the display panel is not uniform due to reduction of transmission of the potential of the direct-current power supply end is avoided, and the display effect of the display panel is good.

The invention discloses a display device, an array substrate, a pixel circuit and a driving method thereof. The pixel circuit comprises a resetting unit, a driving control unit, a power supply unit, an energy storage unit, a driving unit and a light emitting unit, wherein the resetting unit is used for writing input voltage of a resetting end into a first control point and writing input voltage ofa reference power supply end into a second control point; the driving control unit is used for writing input voltage of a data end into the first control point; the power supply unit is used for providing voltage of a first power supply end to the second control point and enabling a third control point to communicate with a fourth control point; the energy storage unit is used for storing the voltage of the first control point and the voltage of the second control point; the driving unit is used for discharging under the control of the voltage of the first control point and the voltage of thesecond control point; and the light emitting unit is used for emitting light under the control of the voltage of the fourth control point. By the pixel circuit, the problem of short-term incidental images can be improved effectively, meanwhile, threshold value voltage compensation and IR drop compensation are realized, and the problem that the display brightness of a panel is uneven is solved effectively.