LIQUID-CRYSTAL DISPLAY PANEL AND CHOPPER-TYPE COMPARATOR

• Main Authors: HAYASHI SHUJI, NAKAJIMA YOSHIHARU, INO MASUMITSU, KOITO TAKEO, MIZUHASHI HIROSHI, YAMAUCHI YUKO, TANAKA TSUTOMU
• Format: Patent
• Language: English; Korean
• Published: 29.04.2010
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; EDUCATION; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PURPOSE: The present invention relates to a liquid-crystal display panel having a touch-sensor function and a chopper-type comparator which can be properly installed on such a liquid-crystal display panel. CONSTITUTION: A liquid-crystal display panel comprising: gate lines each serving as a row-direction line which is one of the rows of a two-dimensional matrix; data signal lines each serving as a column-direction line which is one of the columns of said two-dimensional matrix; a plurality of liquid-crystal pixel sections which are laid out to form said two-dimensional matrix and each placed at the intersection of one of said gate lines and one of said data signal lines; chopper-type comparators each connected to one of said data signal lines and each used for converting the value of a sensor signal read out from one of said liquid-crystal pixel sections connected to said data signal lines into a binary value; and a shift register(31) for converting outputs of said chopper-type comparators from parallel data into serial data and outputting said serial data, wherein each individual one of said liquid-crystal pixel sections contains a liquid crystal provided between a pixel electrode and a facing electrode facing said pixel electrode, each individual liquid-crystal pixel section includes a pressure sensor for sensing an applied pressure by detecting whether said pixel electrode and said facing electrode are in a state of being brought into contact or non-contact with each other.