摘要:
A driving circuit in an organic electroluminescent device includes a gate driver unit for sequentially outputting a control signal to select gate lines in a luminescent array unit and a current driver unit for supplying picture data to a data lines in the luminescent array unit corresponding to the gate lines selected by the gate driver unit and selectively driving organic electroluminescent devices of the selected line. The driving circuit includes a minimum gray level judgment unit for determining whether the picture data is of a predetermined minimum gray level; and a switching unit for receiving a control signal according to the determination made by the minimum gray level judgment unit and for selectively supplying a reference voltage or a reference current to the selectively driven organic electroluminescent devices.
摘要:
A driving circuit for an active matrix organic light emitting diode includes a gamma voltage generation unit for generating differentiated gamma reference voltages corresponding to red, green, and blue colors and a driving unit for outputting a video data signal of a frame, by receiving the respective gamma reference voltages corresponding to red, green and blue colors generated in the gamma voltage generation unit and the power voltages corresponding to red, green and blue colors from the power supply unit. The driving circuit for the active matrix organic LED generates the video signal applied to the pixel for displaying the respective RGB colors, using the power voltages and gamma reference voltages which are independent according to the respective RGB colors and accordingly the pixel can be driven exactly as described using organic substances having different RGB characteristics, thus to improve the quality of the image.
摘要:
A liquid crystal display device includes first and second substrates facing each other, a layer of liquid crystal molecules interposed between the first and second substrates, a plurality of color displaying sub-pixels including first, second and third sub-pixels defined on the first and second substrates, first common electrodes in the first, second and third sub-pixels on the first substrate, first pixel electrodes in the first, second and third sub-pixels on the first substrate and alternately arranged with the first common electrodes, color filter layers in the first, second and third sub-pixels on the second substrate, a plurality of viewing angle restricting sub-pixels including fourth, fifth and sixth sub-pixels defined on the first and second substrates, the fourth, fifth and sixth sub-pixels corresponding one-to-one with the first, second and third sub-pixels, second pixel electrodes in the fourth, fifth and sixth sub-pixels on the first substrate, and second common electrodes in the fourth, fifth and sixth sub-pixels on the second substrate.
摘要:
A liquid crystal display device includes first and second substrates facing each other, a layer of liquid crystal molecules interposed between the first and second substrates, a plurality of color displaying sub-pixels including first, second and third sub-pixels defined on the first and second substrates, first common electrodes in the first, second and third sub-pixels on the first substrate, first pixel electrodes in the first, second and third sub-pixels on the first substrate and alternately arranged with the first common electrodes, color filter layers in the first, second and third sub-pixels on the second substrate, a plurality of viewing angle restricting sub-pixels including fourth, fifth and sixth sub-pixels defined on the first and second substrates, the fourth, fifth and sixth sub-pixels corresponding one-to-one with the first, second and third sub-pixels, second pixel electrodes in the fourth, fifth and sixth sub-pixels on the first substrate, and second common electrodes in the fourth, fifth and sixth sub-pixels on the second substrate.
摘要:
A liquid crystal display device includes a thin film transistor having a gate electrode, a source electrode and a drain electrode; a data line connected to the source electrode; a gate line connected to the gate electrode; a storage capacitor connected to the drain electrode; a data line capacitor connected to the data line; a first switch connected to the data line; a tank capacitor connected to the first switch; and a common voltage transmission line connected to the tank capacitor to supply a common voltage.
摘要:
An active matrix organic electroluminescent display device of the present invention is fabricated through a six-mask process unlike the related art that uses eight masks. In the present invention, since the ground line and the power line are entirely or over substantially disposed above the substrate, the resistance of the power line is reduced and thermal damage that may occur in the power line during driving the device is prevented. Therefore, the image quality increases and the uniformity in the display can be obtained. Furthermore, due to the reduction of the mask process, the occurrence of defects is reduced and the production yield can be raised. Additionally, the principle of the present invention can be applied to either the top emission type organic electroluminescent display device or the bottom emission type organic electroluminescent display device. When it is utilized for the top emission type, the active matrix organic electroluminescent display device can have a high aperture ratio.
摘要:
A liquid crystal display device includes first and second substrates facing and spaced apart from each other, each of the first and second substrates having a first sub-pixel region, a second sub-pixel region, a third sub-pixel region, a fourth sub-pixel region and a fifth sub-pixel region for adjusting a viewing angle, the first, second, third and fourth sub-pixel regions surrounding the fifth sub-pixel region; a liquid crystal layer between the first and second substrates; a plurality of first pixel electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate; a plurality of first common electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate, the plurality of first common electrodes alternating with the plurality of first pixel electrodes; a second pixel electrode in the fifth sub-pixel region on the first substrate; and a second common electrode in the fifth sub-pixel region on the second substrate, the second common electrode facing the second pixel electrode.
摘要:
A liquid crystal display device includes a timing control unit for generating first and second control signals, which are transitioned every ½ frame. A polarity signal is set according to a count number obtained by counting the number of wave forms of the first and/or second control signals. A plurality of gate lines and data lines are arranged on a substrate crossing each other. A plurality of pixels are arranged in a matrix format on the substrate, with two pixels being provided in the regions divided by the gate and data lines. A data driving unit determines polarities of the first and second image data according to the polarity signal being received from the timing control unit, and then supplies the first and second image data to the pixels in the first and second columns through the first and second data lines, respectively.
摘要:
A liquid crystal display device includes first and second substrates facing and spaced apart from each other, each of the first and second substrates having a first sub-pixel region, a second sub-pixel region, a third sub-pixel region, a fourth sub-pixel region and a fifth sub-pixel region for adjusting a viewing angle, the first, second, third and fourth sub-pixel regions surrounding the fifth sub-pixel region; a liquid crystal layer between the first and second substrates; a plurality of first pixel electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate; a plurality of first common electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate, the plurality of first common electrodes alternating with the plurality of first pixel electrodes; a second pixel electrode in the fifth sub-pixel region on the first substrate; and a second common electrode in the fifth sub-pixel region on the second substrate, the second common electrode facing the second pixel electrode.
摘要:
A liquid crystal display device includes a first substrate; a second substrate facing the first substrate; a liquid crystal layer interposed between the first and second substrates; first, second, third, and fourth sub-pixels defined on the first and second substrates; a first electric field distorting pattern on the first, second and third sub-pixels on the first substrate; a second electric field distorting pattern on the first, second and third sub-pixels on the second substrate; a third electric field distorting pattern on the fourth sub-pixel on the first substrate; and a fourth electric field distorting pattern on the fourth sub-pixel on the second substrate, wherein the first and second electric field distorting patterns are parallel to each other, and wherein the third and fourth electric field distorting patterns are parallel to each other at an angle that is different than that of the first and second distorting patterns.