36results about How to "Reduce brightness deviation" patented technology

A light source module includes a light guide plate having a light incident surface receiving light and a light emitting surface emitting the received light, a board arranged adjacent to the light guide plate and having a light source mounting surface, at least one first light source disposed on the light source mounting surface of the board to provide a first light to the light incident surface of the light guide plate, and at least one second light source disposed on both sides of the light source mounting surface adjacent to the first light source to provide a second light toward the first light source.

Discussed are an organic light emitting diode (OLED) display device and a method for driving the same. The OLED display device includes pixels each including a light emitting element, and a pixel driving circuit. The pixel driving circuit includes a driving switching element connected in series between high and low-level voltage supply lines, together with the light emitting element, a first switching element for connecting a data line and a first node connected to a gate of the driving switching element in response to a first scan signal, a second switching element for connecting an initialization voltage supply line and a second node connected to a source of the driving switching element in response to a second scan signal, and a third switching element for connecting the high-level voltage supply line and a drain of the driving switching element in response to an emission signal.

Discussed herein are an OLED display device and a method of driving the same. The OLED display device includes according to an embodiment an organic light-emitting diode; a driving transistor involved in driving the organic light-emitting diode and including a bottom gate electrode, an oxide semiconductor layer, a source electrode, a drain electrode and a top gate electrode; a first switching transistor electrically connected to the bottom gate electrode of the driving transistor and involved in transmitting a data voltage to control the driving transistor; a storage capacitor electrically connected to the bottom gate electrode and involved in charging the data voltage; a second switching transistor configured to store a threshold voltage in the storage capacitor; a compensating transistor directly connected to the top gate electrode of the driving transistor to compensate for a deviation in the threshold voltage of the driving transistor; and a compensating capacitor disposed between the source electrode of the driving transistor and a source electrode of the compensating transistor and storing the threshold voltage therein.

The present disclosure relates to a display device. The display device according to an embodiment of the present inventive concept includes gate lines extending along a first direction, data lines extending along a second direction, pixels including pixel electrodes, each of the pixels including a transistor connected to a gate line and a data line, and a pixel electrode connected to the transistor, the pixels including a first pixel which includes a first pixel electrode connected to a first data line and is disposed in n pixel row and m pixel column, and a second pixel which includes a second pixel electrode connected to the first data line or a second data line disposed adjacent to the first data line and is disposed in (n+1) pixel row and the m pixel column, wherein m and n are natural numbers. The first data line does not overlap the first pixel electrode and overlaps the second pixel electrode.

The invention discloses a flat panel display, in particular a PAM flat panel display characterized by low energy consumption. The flat panel display includes a current reference generator for generating a data driving current reference supplying a driving current proportional to a size of input data from the outside, and a charging / discharging current reference according to a difference in data size between scan lines; and a data-driven output device for directly supplying currents corresponding to respective current references to the display panel. The advantage of the flat panel display is that by adjusting the data-driven charging and discharging current according to the size of the input data, the amount of the discharging current that has no practical effect on light emission is reduced, thereby reducing the total energy consumption.

Provided is a display apparatus, and even though a light guide portion is very thin, image light beams in high brightness can be emitted from a light-emitting portion, and a transparent member which has a plurality of partial reflection layers can be manufactured to a structure that is suitable for joining in low cost. A light guide system (30) that includes a light-incident portion (40) includinga light-incident curved surface (41) on which image light beams (L) as non-parallel light beams (L) are incident and a light-reflective curved surface (42) which reflects the image light beams (L) such that the image light beams (L) are converted into parallel light beams, and a light guide portion (50) being a portion in which a plurality of partial reflection layers (55) are disposed in parallel. The light guide portion (50) is filled with a parallel light flux emitted from the light-incident portion (40). The light-incident portion (40) is formed of a first transparent member (61), the portion (54) in which the partial reflection layers (55) are formed is formed of a second transparent member (62) which is surface-bonded to the first transparent member (61) via a bonding surface (63),and the bonding surface (63) is inclined in the same direction as that of the partial reflection layer (55).

A display device includes a display unit which includes pixels, an emission driver which applies an emission control signal for allowing the pixels to emit light, and a signal controller which receives a data enable signal including an active period and a blank period during which an image signal is inputted and outputs a control signal for controlling the emission driver such that an emission period of the pixels is changed in response to a blank period.

A display device including a multiplexer and a method of driving the same are disclosed. The display device includes: a timing control section for generating image data, a data control signal, and a gate control signal; a data driving section for generating a data voltage using the image data and the data control signal; a gate driving section for generating a gate voltage using the gate control signal; a display panel including a plurality of sub-pixels and displaying an image using the data voltage and the gate voltage; and a plurality of first MUX switches and a plurality of second MUX switches for sequentially transmitting the data voltage to two sub-pixels of the same color among the plurality of sub-pixels.

The invention discloses a display panel and a display device. The display panel includes: a plurality of pixel units, each pixel unit includes a plurality of pixel groups, and each pixel group includes at least one sub-pixel that emits light of one color; wherein, at least one of at least one pixel group in the plurality of pixel groups The side surfaces include solid surfaces. In the embodiment of the present invention, by setting the pixel unit to include multiple pixel groups, at least one surface of at least one pixel group in the pixel group includes a three-dimensional surface, so as to improve the problem of color shift of the display panel at non-orthogonal viewing angles.

The invention belongs to the field of constant-current driving and provides a constant-current driving circuit. A current pre-opening technology is adopted in the constant-current driving circuit; parasitic capacitance is provided instantaneously when the circuit is opened, and flows through an electric energy discharging channel of a power switch pipe Q2, so that the voltage of an output current port of the constant-current driving circuit is quickly reduced to be output when load is completely conducted, the load quickly enters a complete conduction state, and the difference value between the effective conduction time of the load and the effective level time of an enable control signal is greatly shortened; when the load is an LED (light-emitting diode), the corresponding brightness deflection between the practical brightness of the load and set value output by an LED display screen controller is reduced, the displaying effect is optimized, and the user experience is improved.

The embodiment of the invention discloses a driving method, a driving device and a display device of a display panel. The driving method of the display panel includes: acquiring the to-be-displayed luminance of each pixel unit of the display panel; wherein, the pixel unit includes at least three sub-pixels with different light emitting colors; determining the luminance segment corresponding to the to-be-displayed luminance to determine The gamma value corresponding to the brightness to be displayed, wherein different brightness segments correspond to different gamma values; the display gray of each sub-pixel included in the pixel unit is determined according to the gamma value and the brightness to be displayed order. The embodiment of the present invention reduces the brightness deviation of the display panel and improves the display effect of the display panel.

Embodiments of the present disclosure provide a data signal compensation method for a pixel circuit, including: inputting a test signal to the data signal line, and detecting a real-time voltage at the first node after a first preset time elapses; comparing the real-time voltage with a preset voltage, and in response to the real-time voltage being deviated from the preset voltage, adjusting an initial compensation value for a mobility, so as to make the real-time voltage be consistent with the preset voltage, wherein the preset voltage is set by obtaining an initial threshold voltage for the driving transistor; generating a compensation test signal and inputting the compensation test signal to the data signal line; and generating a test signal, inputting the generated test signal to the data signal line, and sensing a first voltage at the first node after a first preset time elapses as the preset voltage.

A foldable display device includes a display panel. The display panel includes a plurality of display areas divided by at least one or more folding lines. A plurality of data integrated circuits is configured to output a data voltage to the plurality of display areas. Each of the plurality of data integrated circuits includes at least one or more gamma voltage generators that are configured to output a plurality of gamma voltages. The at least one or more gamma voltage generators are connected by an external gamma line, so that boundaries between the display areas may be minimized or reduced.