33results about How to "Reduce uneven brightness" patented technology

A display-unit-use display control method controls display of pixels in a display unit including a large number of light emitting elements in a row direction and a column direction, the light emitting elements having brightness, which changes in accordance with a value of current supplied thereto. A current is supplied, the current supplying conductor from one or each end part thereof in a column direction, the current supplying conductor supplying the current to the light emitting elements. The pixels are displayed line by line in accordance with a selection timing, and the display of pixels is deleted line by line in accordance with a deletion timing. It is so arranged that with respect to a certain line, a period from a time at which the pixels get displayed in accordance with the selection timing to a time at which the display of the pixels gets deleted is shorter than a period between start and end of the selection timing.

The present invention relates to an LED array capable of reducing uneven brightness distribution. A semiconductor LED array comprises a plurality of semiconductor LED elements disposed on an oblong substrate that is long in a first direction and arranged along with said first direction. Each LED element comprises an electrode layer formed on the substrate, a semiconductor LED stack formed on the electrode layer, stretched long in the first direction and comprising a p-type semiconductor layer, an active layer and an n-type semiconductor layer, a first wiring layer formed along and in parallel to one long side of the semiconductor LED stack, and second wiring layers extending to a direction of a short side from the first wiring layer and electrically connected to the n-type semiconductor layer on a surface of the semiconductor LED stack. The first wiring layers are disposed on different long sides of the semiconductor LED stacks in the adjacent LED elements.

The invention discloses a light guide plate and a backlight module. The light guide plate is suitable for guiding the light to move along a first direction and comprises a first surface, a second surface, a light incident surface and a plurality of first cylindrical structures. The light incident surface is connected to the first surface and the second surface; and the light is emitted into the light guide plate from the light incident surface. The first cylindrical structures are arrayed on the first surface in a mode that respective long shaft directions are approximately parallel to the first direction. Each cylindrical structure is provided with a curved surface protruded relative to the first surface and at least one groove which extends and is distributed along the first direction is formed on the curved surface.

In a display device (10), a scan-driving circuit (702) supplies a scanning voltage, and then a maintaining voltage pulse, to one side of display electrodes (Y1,..., Yj,..., Yn) of each pair of a plurality of pairs of display electrodes in adjacent two units (314, 316) of a plurality of units, at least one of at least two maintaining voltage circuits supplies a maintaining voltage pulse potential to the other side of display electrodes (X1,..., Xj,..., Xn) of each pair of a plurality of pairs of display electrodes of at least one unit (502) at the most outside of a plurality of units.

The invention discloses a display panel and a display device. The display panel includes a first display area and a second display area. The light transmittance of the first display area is greater than that of the second display area. In the first display area, The display panel includes a pixel area and a light-transmitting area located between the pixel areas. The display panel includes: a light-emitting unit layer; an auxiliary layer, including at least one auxiliary part, and the auxiliary part is located in the corresponding light-transmitting area; the first electrode layer is arranged in the on the light-emitting unit layer and the auxiliary layer; wherein, the auxiliary portion includes a platform portion and an edge portion located at the edge of the platform portion, the first electrode layer covers the light-emitting unit layer and at least part of the edge portion, and the thickness of the first electrode layer on the edge portion is less than The thickness of the first electrode layer on the light emitting unit layer. The invention ensures that the cathode step difference at the boundary of the light-transmitting area is reduced, the phenomenon of uneven brightness at the boundary of the light-transmitting area is reduced, and the brightness uniformity of the display panel is improved.

Provided are a backlight module (230) and a liquid crystal display device. The backlight module (230) comprises: a back plate (233), a heat source (231) and a heat obstruction mechanism (240). The heat source (231) is fixedly arranged with respect to the back plate (233), and the heat obstruction mechanism (240) is arranged in a heat transfer path between the back plate (233) and the heat source (231) to obstruct the heat which is transferred from the heat source (231) to the back plate (233). By providing the heat obstruction mechanism (240) in a heat transfer path of the heat source (231) and a liquid crystal panel (210), the heat of the heat source (231) is obstructed from being transferred to the liquid crystal panel (210), thereby reducing the phenomenon of light mura resulting from the overheating of the liquid crystal panel (210).