摘要:
This invention provides an inspecting method, an inspecting apparatus, and a defect correcting method, for an active matrix substrate including: a gate bus line; a source bus line; a pixel electrode; a switching element for driving the pixel electrode; and a pair of electrodes constituting an auxiliary capacitance. The inspecting method includes: a step of disposing a counter substrate having a face on which a counter electrode is formed so that the face faces the active matrix substrate with a liquid crystal layer interposed therebetween, and connecting signal supplying terminals to gate bus lines and source bus lines and the counter electrode; and a detection step of detecting a defect on the active matrix substrate by performing at least one of a first signal generating step, a second signal generating step, and a third signal generating step. The first, second, and third signal generating steps all include alternately applying an ON signal for turning on the switching element and an OFF signal for turning off the switching element to the gate bus line. The first signal generating step includes applying a first detecting signal having a voltage which changes before the ON signal is applied to the source bus line. The second signal generating step includes applying a second detecting signal having a voltage which changes before and after the ON signal is applied. The third signal generating step includes applying a third detecting signal having a voltage which changes after the ON signal is applied.
摘要:
An active matrix substrate has an insulating substrate, a plurality of signal lines and a plurality of scanning lines arranged in a matrix on the insulating substrate and defining a matrix of areas, each area including a pixel electrode and a switching device. The switching device has a connecting electrode for connecting the switching device to the pixel electrode. The connecting electrode includes a rectangular main portion and an extended portion connected to the main portion, and the main portion has a side which is substantially identical in length to the width of the switching device. The main portion and the extended portion are disposed between the pixel electrode and the insulating substrate.
摘要:
An active matrix substrate comprising picture element electrodes disposed in a matrix on a substrate, each of which is composed of divided electrodes, and an electrically conductive film on which two of said divided electrodes adjacent to each other are superposed in a manner to sandwich an insulating film therebetween so as to form a connection. The connection is irradiated with laser beams from the outside of the display apparatus when one of the divided electrodes brings about a picture element defect, so that both the divided electrodes can be electrically connected to each other, thereby attaining a correction of the picture element defect. A display apparatus using the active matrix substrate is also provided.
摘要:
An active matrix substrate comprising picture element electrodes disposed in a matrix on a substrate, each of which is composed of divided electrodes, and an electrically conductive film on which two of said divided electrodes adjacent to each other are superposed in a manner to sandwich an insulating film therebetween so as to form a connection. The connection is irradiated with laser beams from the outside of the display apparatus when one of the divided electrodes brings about a picture element defect, so that both the divided electrodes can be electrically connected to each other, thereby attaining a correction of the picture element defect. A display apparatus using the active matrix substrate is also provided.
摘要:
The active matrix liquid crystal panel of this invention includes: a plurality of scanning lines and a plurality of signal lines arranged to cross each other; a plurality of pixel electrodes arranged in respective regions defined by the plurality of scanning lines and the plurality of signal lines; and a plurality of switching elements for driving the plurality of pixel electrodes, wherein each of the plurality of pixel electrodes overlaps at least one of the adjacent scanning lines and signal lines among the plurality of scanning lines and signal lines via an insulating film, and at least one of the plurality of pixel electrodes is electrically connected with the overlapped line.
摘要:
An active matrix display device comprising two pixel electrodes in each rectangular area defined by adjacent signal lines and adjacent scanning lines. The pixel electrodes disposed across each signal line are connected with respective switching elements, which are connected to the common scanning line and the common signal line. In this way, each pixel electrode has only one signal line formed on one side thereof. As a result, a line defect conventionally produced by a leakage between adjacent signal lines through a pixel electrode is prevented. Further, a defective pixel can be easily corrected by short-circuiting the pixel electrode with the adjacent signal line.
摘要:
An active matrix substrate which includes a plurality of pixel electrodes arranged in a matrix over an insulating substrate, with each of the pixel electrodes having a transparent conductive film including an additional capacitance portion and a non-additional capacitance portion. Additional capacitance electrodes are capacitively coupled to said additional capacitance portions through at least one insulating film. A conductive film electrically connects the additional capacitance portion to the non-additional capacitance portion of each of the pixel electrodes. The transparent conductive film of each of said pixel electrodes includes a portion for covering the conductive film, the portion for covering having a wider width than a width of the conductive film.
摘要:
An active matrix device has pixel electrodes (40), each of which is divided into a plurality of divisional pixel electrodes (41, 42). Each divisional pixel electrode (41, 42) has a corresponding switching element (31, 32). A junction bridges adjacent ones of the divisional pixel electrodes (41, 42), and at least one spare switching element (34) is disposed in proximity to the junction. The junction has a pair of metal pieces (44, 45) electrically connected to the respective pixel electrodes (41, 42), an output terminal (74) of the spare switching element (34), and a joint metal layer (46) on which both of the metal pieces (44, 45) and the output terminal (74) of the spare switching element (34) are superposed with an insulating film (54) placed therebetween.
摘要:
A display elect:rode substrate comprising at least two, first and second, TFTs connected in series to each picture element, wherein the first and second thin film transistors are Juxtaposed on the same one of the gate bus lines, part of the gate bus line functions as gate electrodes of the first and second thin film transistors, a source electrode of the first thin film transistor is connected to the source bus line, a drain electrode of the first thin film transistor is connected to a source electrode of the second thin film transistor, and a drain electrode of the second thin film transistor is connected to the picture element electrode, whereby a picture element defect caused by a short-circuit defect of the TFTs can be reduced.
摘要:
An active matrix display device which includes a pair of insulating substrates, a first group of buses formed on one of the sides of the insulating substrates, a second group of buses crossing the first group of buses, conductive film wirings formed on the second group of buses, wherein the width of each conductive film wiring at stepped portions of the first group of buses is not smaller than that of the conductive film wirings located out of the stepped portions.