SUBSTRATE FOR LIQUID CRYSTAL DISPLAY PANEL, LIQUID CRYSTAL DISPLAY PANEL, PROCESS OF MANUFACTURING SUBSTRATE FOR LIQUID CRYSTAL DISPLAY PANEL, AND SUBSTRATE TESTING METHOD
First Claim
1. A liquid crystal display panel substrate that constitutes a liquid crystal display panel by being placed opposite the other substrate with a liquid crystal layer sandwiched between the liquid crystal display panel substrate and the other substrate, the other substrate including a plurality of electrodes or plural sets of electrodes, the liquid crystal display panel substrate comprising:
- a plurality of switching electrodes or plural sets of switching electrodes each of which forms a switch with a corresponding one of the plurality of electrodes or with a corresponding one of the plural sets of electrodes, the plurality of switching electrodes or the plural sets of switching electrodes being each disposed so as to make electrical conduction with the corresponding one of the plurality of electrodes or with the corresponding one of the plural sets of electrodes when either the liquid crystal display panel substrate or the other substrate is pressed against the other with the liquid crystal display panel substrate placed opposite the other substrate; and
reflection coatings which reflect infrared light, the reflection coatings being disposed below each separate one of the plurality of switching electrodes or below each separate one of the plural sets of switching electrodes.
1 Assignment
0 Petitions
Accused Products
Abstract
A liquid crystal display panel (1) includes: touch switches (50) each constituted by a switch electrode (52) of an active substrate (12) and a set of switch PS electrodes (51) of a counter substrate (11) so as to make conduct electricity when the active substrate (12) or the counter substrate (11) is pressed; and reflection coatings (38 and 39) which reflect infrared light emitted from a Fourier transform infrared spectrophotometer, the reflection coatings (38 and 39) being provided either in the active substrate (12) or the counter substrate (11) with the switch electrode (52) or the set of switch PS electrodes (51) stacked on a corresponding one of the reflection coatings (38 and 39). This provides a technique for efficiently determining the presence or absence of an alignment film on any touch switch provided inside of a liquid crystal display panel having the function of an in-cell touch sensor.
3 Citations
20 Claims
-
1. A liquid crystal display panel substrate that constitutes a liquid crystal display panel by being placed opposite the other substrate with a liquid crystal layer sandwiched between the liquid crystal display panel substrate and the other substrate, the other substrate including a plurality of electrodes or plural sets of electrodes, the liquid crystal display panel substrate comprising:
-
a plurality of switching electrodes or plural sets of switching electrodes each of which forms a switch with a corresponding one of the plurality of electrodes or with a corresponding one of the plural sets of electrodes, the plurality of switching electrodes or the plural sets of switching electrodes being each disposed so as to make electrical conduction with the corresponding one of the plurality of electrodes or with the corresponding one of the plural sets of electrodes when either the liquid crystal display panel substrate or the other substrate is pressed against the other with the liquid crystal display panel substrate placed opposite the other substrate; and reflection coatings which reflect infrared light, the reflection coatings being disposed below each separate one of the plurality of switching electrodes or below each separate one of the plural sets of switching electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A liquid crystal display panel including an active substrate, a liquid crystal layer, and a counter substrate placed opposite the active substrate with the liquid crystal layer sandwiched therebetween, the liquid crystal display panel comprising:
-
switches each constituted by a first switching electrode or a set of first switching electrodes of the active substrate and a second switching electrode or a set of second switching electrodes of the counter substrate so as to conduct electricity when the active substrate or the counter substrate is pressed; and at least either first reflection coatings which reflect infrared light or second reflection coatings which reflect infrared light, the first reflection coatings being provided in the active substrate with the first switching electrode or the set of first switching electrodes stacked on a corresponding one of the first reflection coatings, the second reflection coatings being provided in the counter substrate with the second switching electrode or the set of second switching electrodes stacked on a corresponding one of the second reflection coatings. - View Dependent Claims (13, 14, 15)
-
-
16. A method for fabricating a liquid crystal display panel substrate that constitutes a liquid crystal display panel being placed opposite the other substrate with a liquid crystal layer sandwiched between the liquid crystal display panel substrate and the other substrate, the other substrate including a plurality of electrodes or plural sets of electrodes, the method comprising:
-
a reflection coating forming step of forming reflection coatings which reflect infrared light; a switching electrode forming step of forming, above each separate one of the reflection coatings formed in the reflection coating forming step, a plurality of switching electrodes or plural sets of switching electrodes each of which forms a switch with a corresponding one of the plurality of electrodes or with a corresponding one of the plural sets of electrodes, and each of which makes electrical conduction with the corresponding one of the plurality of electrodes or with the corresponding one of the plural sets of electrodes when either the liquid crystal display panel substrate or the other substrate is pressed against the other with the liquid crystal display panel substrate placed opposite the other substrate. - View Dependent Claims (17, 18, 19)
-
-
20-25. -25. (canceled)
Specification