LCD panel with new control line topology

Patent metadata

Field	Value
Publication number	US-9360693-B2
Application number	US-201314018612-A
Country	US
Kind code	B2
Filing date	Sep 5, 2013
Priority date	Sep 5, 2012
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A liquid crystal display (LCD) that includes a plurality of segments, and a plurality of control lines to activate the plurality of segments. Each of the plurality of segments is associated with an intersection of two of the control lines, and each of the plurality of control lines intersects with each of the other plurality of control lines.

First claim

What is claimed is:

1. A liquid crystal display (LCD), comprising:
a plurality of segments; and
a plurality of control lines to activate the plurality of segments, wherein each of the plurality of segments is associated with an intersection of two of the control lines;
wherein each of the plurality of control lines intersects with each of the other plurality of control lines only once; and
wherein a LCD waveform generator to activate the plurality of segments uses a duty cycle inversely proportional the number of control lines of the LCD.

2. The LCD of claim 1 , wherein the LCD waveform generator drives a segment in the plurality of segments using more than two drivers.

3. The LCD of claim 1 , wherein the LCD waveform generator uses a number of bias levels based on the number of control lines of the LCD.

4. A liquid crystal display (LCD) system, comprising:
a LCD panel having a plurality of control lines coupled to a plurality of input pins, wherein each control line intersects with each of the other control lines only once and a segment is formed at each intersection, wherein a segment is an area of liquid crystal controlled by voltages applied to the control lines; and
a LCD waveform generator coupled to the input pins of the LCD panel and configured to generate and transmit waveforms to the plurality of control lines to activate the segments of the LCD panel, wherein a number of output pins of the LCD waveform generator is equal to the number of input pins of the LCD panel;
wherein the waveforms vary between a plurality of voltage levels proportional to the inverse of the number of control lines.

5. A liquid crystal display (LCD) system, comprising:
a LCD panel having a plurality of control lines coupled to a plurality of input pins, wherein each control line intersects with each of the other control lines only once and a segment is formed at each intersection, wherein a segment is an area of liquid crystal controlled by voltages applied to the control lines; and
a LCD waveform generator coupled to the input pins of the LCD panel and configured to generate and transmit waveforms to the plurality of control lines to activate the segments of the LCD panel, wherein a number of output pins of the LCD waveform generator is equal to the number of input pins of the LCD panel;
wherein the direct current voltage experienced by an activated segment is zero.

Assignees

• Texas Instruments Inc

Inventors

• Jun Zhang
• Jun Ji Ru

Classifications

• G02F1/1333

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title

• G09G3/04

  for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments {using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions} · CPC title

• G02F1/13306 Primary

  Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title

• G02F1/134327 Primary

  Segmented, e.g. alpha numeric display · CPC title