TH15931B - Data drive circuit for use with an LCD display unit. - Google Patents

Abstract

A data drive circuit (25) and a system drive scheme that can be integrated directly on the base of the display unit (14) to reduce the cost of cyclic integrated circuits and hybrid assemblies. Required by the crystal display unit. An uncensored matrix liquid for bonding it. The multiplexer (102) circuit is accumulated on the display unit (14) for removing one group of multiplexes of Y column, the multiplexed image signal column as X group A group of Y-dot capacitors (94,96, -100) that are also accumulated on the base (14) in the Z row. In addition, the drive circuit (12) provides a voltage signal. To pre-charge the dot capacitor (94,96, -100) at the first voltage in the first period to That the linked data signal is multiplexed during the second period, causing the dot-matrix capacitor (94,96-100) to hold up to a predetermined second voltage to have a display unit. While Rows of image dots are swept sequentially.

Claims (8)

1. A circuit for providing visual information to a display unit which contains a matrix row of point cells in a row and Column, and where the display unit has at least one (14) and second base layers, where one is the glass at Separated by layers of optical-electrical material, the circuit is assembled with Y-column lines (13) accumulated on one base layer (14) X group, group of Y component d multiplexer components (108,110,112,114) accumulated on one such base layer where each component removed. The multiplexing is connected to one of the Y-column lines, the external multiplexing circuit (102), the first base layer with the path that makes the signal work X path, is connected sequentially to the X group. A group of components that disassemble the Y multiplexing component for Makes each group of X group, a group of Y-detached components functional, and a control circuit (12) outside the first base layer with a Y-line connected to the Y-column line for the data link. The images and voltages for pre-charging are applied to the Y-column lines to charge each pixel in each of the selected rows, respectively, to the corresponding DC voltage rating. Preset so that the pre-charging voltage is available before the image data is linked With the Y input line, and with the circuit disconnected simultaneously multiplexing, each X group of the component dis-multiplexes the Y component operates when the pre-charge voltage is applied. And continuously make the X group functional when the image data is provided there 2. The circuit according to claim 1 also includes an X group, a group of Y-transistor switching groups (86,88, - 92) connected to the X group, the interlocking group of the Y capacitive image point component. Components (94,96--100) to form a group X, a group of switching components, Y components in each corresponding row, Z rows, and attach to group X, group of components removing the Y component multiplexing (108,110 --112) and each capacitor dotted component has a first electrode deposited on the first base layer (14) and a common electrode on the second base. Each of the first electrodes is linked to the corresponding first of Y-transistor switching transistors where each capacitor image element is pre-charged by Pre-charge voltage at pre-set level (V +, V) 3. The circuit according to claim 2 is also incorporated by a thin-film transistor forming each component that removes the multiplex. (108,110, - 112) and each transistor switching (86,88, - 92), the working pair (104,106) that generates each of the signal paths that make the job X the accumulated path. On the first base Where the first working line pair is associated with each Is the odd of the component that disassembles the multiplex of the group. By sequence and pairs that make the second job correct Associate with each of which is a pair of the group's multiplexed components, respectively, for Excite the odd and even lines to the odd and even transistors, respectively. In the selected row of Z rows in each group of switching components, while each row is triggered sequentially to form an image. Displays the recording from the image data, and Where the multiplex disconnected circuit (102) provides a workable signal to make all groups X groups of Y components the multiplexed detached components work simultaneously when the control circuit provides Pressure for pre-charging to the inlet line 4. Circuit according to claim 3, where X = 6 groups Y = 64 and Z = 240. 5. Circuit according to claim 3 where the image of the recorded image is an image of a television 6. The circuit according to claim 1 where the control circuit (12) consists of The first preset voltage source (V +, V) linked to the odd lines D1, D3, --- Dn-1 of the control circuit for its pre-charged voltage. The second preset voltage source (V +, V) linked to the dual output lines D2, D4, --Dn of the control circuit for its pre-charging voltage. The first gate way to choose to link image data To the D1 to Dn output lines, the second gate path for selection links the first and second voltage sources to the D1 to Dn output lines and the gate control path for alternately making the first gate path. And second it works and works Not so that only one gate path is made to work each time. 7. The circuit according to claim 1, where the control circuit (12) provides a pre-charge voltage to the Y input line (13) for the first period and provides visual information to the Y entry line for the period. Two contiguous X period and a circuit that multiplexes (102) is removed with all input Y lines working, ie group X group between the first period and causing the line Y line to work for one of the number X. The group of disassembled components Y to the corresponding component disassembled. (108,110--112) during the period Two consecutive 8. Circuit according to claim 1 where the display unit is LCD.